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anchor | Solana Sealevel Framework | Blockchain library

 by   project-serum Rust Version: v0.24.2 License: Apache-2.0

 by   project-serum Rust Version: v0.24.2 License: Apache-2.0

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kandi X-RAY | anchor Summary

anchor is a Rust library typically used in Blockchain, Ethereum applications. anchor has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.
Anchor is a framework for Solana's Sealevel runtime providing several convenient developer tools for writing smart contracts. If you're familiar with developing in Ethereum's Solidity, Truffle, web3.js, then the experience will be familiar. Although the DSL syntax and semantics are targeted at Solana, the high level flow of writing RPC request handlers, emitting an IDL, and generating clients from IDL is the same.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • anchor has a medium active ecosystem.
  • It has 1899 star(s) with 679 fork(s). There are 29 watchers for this library.
  • There were 3 major release(s) in the last 6 months.
  • There are 326 open issues and 562 have been closed. On average issues are closed in 149 days. There are 96 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of anchor is v0.24.2
anchor Support
Best in #Blockchain
Average in #Blockchain
anchor Support
Best in #Blockchain
Average in #Blockchain

quality kandi Quality

  • anchor has 0 bugs and 0 code smells.
anchor Quality
Best in #Blockchain
Average in #Blockchain
anchor Quality
Best in #Blockchain
Average in #Blockchain

securitySecurity

  • anchor has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • anchor code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
anchor Security
Best in #Blockchain
Average in #Blockchain
anchor Security
Best in #Blockchain
Average in #Blockchain

license License

  • anchor is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
anchor License
Best in #Blockchain
Average in #Blockchain
anchor License
Best in #Blockchain
Average in #Blockchain

buildReuse

  • anchor releases are available to install and integrate.
  • Installation instructions, examples and code snippets are available.
anchor Reuse
Best in #Blockchain
Average in #Blockchain
anchor Reuse
Best in #Blockchain
Average in #Blockchain
Top functions reviewed by kandi - BETA

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kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.

anchor Key Features

Rust eDSL for writing Solana programs

IDL specification

TypeScript package for generating clients from IDL

CLI and workspace management for developing complete applications

Examples

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use anchor_lang::prelude::*;

declare_id!("Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS");

#[program]
mod counter {
    use super::*;

    pub fn initialize(ctx: Context<Initialize>, start: u64) -> Result<()> {
        let counter = &mut ctx.accounts.counter;
        counter.authority = *ctx.accounts.authority.key;
        counter.count = start;
        Ok(())
    }

    pub fn increment(ctx: Context<Increment>) -> Result<()> {
        let counter = &mut ctx.accounts.counter;
        counter.count += 1;
        Ok(())
    }
}

#[derive(Accounts)]
pub struct Initialize<'info> {
    #[account(init, payer = authority, space = 48)]
    pub counter: Account<'info, Counter>,
    pub authority: Signer<'info>,
    pub system_program: Program<'info, System>,
}

#[derive(Accounts)]
pub struct Increment<'info> {
    #[account(mut, has_one = authority)]
    pub counter: Account<'info, Counter>,
    pub authority: Signer<'info>,
}

#[account]
pub struct Counter {
    pub authority: Pubkey,
    pub count: u64,
}

Solana Anchor: How to make #[account(seeds)] for/ read associated accounts?

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#[instruction(bump: u8)]
pub struct Ctx<'info> {
  #[account(init, seeds = [user_data.deposit_last.as_ref(), &[bump]], payer = payer)]
  pub user_data = ProgramAccount<'info, UserData>,
}

#[account(seeds = [user_data.deposit_last.as_ref(), &[user_data.__nonce]])]
pub user_data = ProgramAccount<'info, UserData>,
#[account]
#[derive(Default)]
pub struct UserData {
  pub authority: Pubkey,
  pub deposit_last: i64,
  pub shares: u64,
  pub reward_debt: u64,
}
-----------------------
#[instruction(bump: u8)]
pub struct Ctx<'info> {
  #[account(init, seeds = [user_data.deposit_last.as_ref(), &[bump]], payer = payer)]
  pub user_data = ProgramAccount<'info, UserData>,
}

#[account(seeds = [user_data.deposit_last.as_ref(), &[user_data.__nonce]])]
pub user_data = ProgramAccount<'info, UserData>,
#[account]
#[derive(Default)]
pub struct UserData {
  pub authority: Pubkey,
  pub deposit_last: i64,
  pub shares: u64,
  pub reward_debt: u64,
}
-----------------------
#[instruction(bump: u8)]
pub struct Ctx<'info> {
  #[account(init, seeds = [user_data.deposit_last.as_ref(), &[bump]], payer = payer)]
  pub user_data = ProgramAccount<'info, UserData>,
}

#[account(seeds = [user_data.deposit_last.as_ref(), &[user_data.__nonce]])]
pub user_data = ProgramAccount<'info, UserData>,
#[account]
#[derive(Default)]
pub struct UserData {
  pub authority: Pubkey,
  pub deposit_last: i64,
  pub shares: u64,
  pub reward_debt: u64,
}

Make ModalBottomSheetLayout always Expanded

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scope.launch { state.animateTo(ModalBottomSheetValue.Expanded) }
scope.launch { state.show() }
-----------------------
scope.launch { state.animateTo(ModalBottomSheetValue.Expanded) }
scope.launch { state.show() }
-----------------------
bottomSheetState.animateTo(ModalBottomSheetValue.Expanded)
 val bottomSheetState =
        rememberModalBottomSheetState(ModalBottomSheetValue.Hidden, confirmStateChange = {
            it != ModalBottomSheetValue.HalfExpanded
        })
-----------------------
bottomSheetState.animateTo(ModalBottomSheetValue.Expanded)
 val bottomSheetState =
        rememberModalBottomSheetState(ModalBottomSheetValue.Hidden, confirmStateChange = {
            it != ModalBottomSheetValue.HalfExpanded
        })
-----------------------
val bottomSheetStatus =
    rememberModalBottomSheetState(
        ModalBottomSheetValue.Hidden,
        skipHalfExpanded = true,
    )

ScrollViewReader scrollTo with .center anchor bug?

copy iconCopydownload iconDownload
ScrollView(.horizontal) { scrollProxy in
    ForEach(sections) { section in
        Text(section.text)
             .scrollId(section.id)
    }
    .onChange(of: index) {
         scrollProxy.scrollTo(
               sections[index].id,
               alignment: .center
     )
   }
}

Send argument to yml anchor for a step in bitbucket-pipelines.yml

copy iconCopydownload iconDownload
pipelines:
  branches:
    master:
      - step: *node-build
          <<: *pushImage
          deployment: uat
    staging:
      - step: *node-build
          <<: *pushImage
          deployment: dev

Python/Selenium web scrap how to find hidden src value from a links?

copy iconCopydownload iconDownload
all_items = bot.find_elements_by_css_selector('.collections-page .thumb-img')
for promo in all_items:
    a = promo.find_elements_by_tag_name("a")
    print("a[0]: ", a[0].get_attribute("href"))
links = bot.find_elements_by_css_selector('.collections-page .thumb-img a')
for link in links:
    print(link.get_attribute("href"))
-----------------------
all_items = bot.find_elements_by_css_selector('.collections-page .thumb-img')
for promo in all_items:
    a = promo.find_elements_by_tag_name("a")
    print("a[0]: ", a[0].get_attribute("href"))
links = bot.find_elements_by_css_selector('.collections-page .thumb-img a')
for link in links:
    print(link.get_attribute("href"))
-----------------------
window.__NUXT__.state.Promotion.promotions[0].HappeningID
items = driver.execute_script("return window.__NUXT__.state.Promotion;")
for item in items["promotions"]:
    base = "https://sunteccity.com.sg/promotions/"
    happening_id = str(item["HappeningID"])
    print(base + happening_id)
https://sunteccity.com.sg/promotions/724
https://sunteccity.com.sg/promotions/731
https://sunteccity.com.sg/promotions/751
https://sunteccity.com.sg/promotions/752
https://sunteccity.com.sg/promotions/754
https://sunteccity.com.sg/promotions/280
https://sunteccity.com.sg/promotions/764
https://sunteccity.com.sg/promotions/766
https://sunteccity.com.sg/promotions/762
https://sunteccity.com.sg/promotions/767
https://sunteccity.com.sg/promotions/732
https://sunteccity.com.sg/promotions/733
https://sunteccity.com.sg/promotions/735
https://sunteccity.com.sg/promotions/736
https://sunteccity.com.sg/promotions/737
https://sunteccity.com.sg/promotions/738
https://sunteccity.com.sg/promotions/739
https://sunteccity.com.sg/promotions/740
https://sunteccity.com.sg/promotions/741
https://sunteccity.com.sg/promotions/742
https://sunteccity.com.sg/promotions/743
https://sunteccity.com.sg/promotions/744
https://sunteccity.com.sg/promotions/745
https://sunteccity.com.sg/promotions/746
https://sunteccity.com.sg/promotions/747
https://sunteccity.com.sg/promotions/748
https://sunteccity.com.sg/promotions/749
https://sunteccity.com.sg/promotions/750
https://sunteccity.com.sg/promotions/753
https://sunteccity.com.sg/promotions/755
https://sunteccity.com.sg/promotions/756
https://sunteccity.com.sg/promotions/757
https://sunteccity.com.sg/promotions/758
https://sunteccity.com.sg/promotions/759
https://sunteccity.com.sg/promotions/760
https://sunteccity.com.sg/promotions/761
https://sunteccity.com.sg/promotions/763
https://sunteccity.com.sg/promotions/765
https://sunteccity.com.sg/promotions/730
https://sunteccity.com.sg/promotions/734
https://sunteccity.com.sg/promotions/623
-----------------------
window.__NUXT__.state.Promotion.promotions[0].HappeningID
items = driver.execute_script("return window.__NUXT__.state.Promotion;")
for item in items["promotions"]:
    base = "https://sunteccity.com.sg/promotions/"
    happening_id = str(item["HappeningID"])
    print(base + happening_id)
https://sunteccity.com.sg/promotions/724
https://sunteccity.com.sg/promotions/731
https://sunteccity.com.sg/promotions/751
https://sunteccity.com.sg/promotions/752
https://sunteccity.com.sg/promotions/754
https://sunteccity.com.sg/promotions/280
https://sunteccity.com.sg/promotions/764
https://sunteccity.com.sg/promotions/766
https://sunteccity.com.sg/promotions/762
https://sunteccity.com.sg/promotions/767
https://sunteccity.com.sg/promotions/732
https://sunteccity.com.sg/promotions/733
https://sunteccity.com.sg/promotions/735
https://sunteccity.com.sg/promotions/736
https://sunteccity.com.sg/promotions/737
https://sunteccity.com.sg/promotions/738
https://sunteccity.com.sg/promotions/739
https://sunteccity.com.sg/promotions/740
https://sunteccity.com.sg/promotions/741
https://sunteccity.com.sg/promotions/742
https://sunteccity.com.sg/promotions/743
https://sunteccity.com.sg/promotions/744
https://sunteccity.com.sg/promotions/745
https://sunteccity.com.sg/promotions/746
https://sunteccity.com.sg/promotions/747
https://sunteccity.com.sg/promotions/748
https://sunteccity.com.sg/promotions/749
https://sunteccity.com.sg/promotions/750
https://sunteccity.com.sg/promotions/753
https://sunteccity.com.sg/promotions/755
https://sunteccity.com.sg/promotions/756
https://sunteccity.com.sg/promotions/757
https://sunteccity.com.sg/promotions/758
https://sunteccity.com.sg/promotions/759
https://sunteccity.com.sg/promotions/760
https://sunteccity.com.sg/promotions/761
https://sunteccity.com.sg/promotions/763
https://sunteccity.com.sg/promotions/765
https://sunteccity.com.sg/promotions/730
https://sunteccity.com.sg/promotions/734
https://sunteccity.com.sg/promotions/623
-----------------------
window.__NUXT__.state.Promotion.promotions[0].HappeningID
items = driver.execute_script("return window.__NUXT__.state.Promotion;")
for item in items["promotions"]:
    base = "https://sunteccity.com.sg/promotions/"
    happening_id = str(item["HappeningID"])
    print(base + happening_id)
https://sunteccity.com.sg/promotions/724
https://sunteccity.com.sg/promotions/731
https://sunteccity.com.sg/promotions/751
https://sunteccity.com.sg/promotions/752
https://sunteccity.com.sg/promotions/754
https://sunteccity.com.sg/promotions/280
https://sunteccity.com.sg/promotions/764
https://sunteccity.com.sg/promotions/766
https://sunteccity.com.sg/promotions/762
https://sunteccity.com.sg/promotions/767
https://sunteccity.com.sg/promotions/732
https://sunteccity.com.sg/promotions/733
https://sunteccity.com.sg/promotions/735
https://sunteccity.com.sg/promotions/736
https://sunteccity.com.sg/promotions/737
https://sunteccity.com.sg/promotions/738
https://sunteccity.com.sg/promotions/739
https://sunteccity.com.sg/promotions/740
https://sunteccity.com.sg/promotions/741
https://sunteccity.com.sg/promotions/742
https://sunteccity.com.sg/promotions/743
https://sunteccity.com.sg/promotions/744
https://sunteccity.com.sg/promotions/745
https://sunteccity.com.sg/promotions/746
https://sunteccity.com.sg/promotions/747
https://sunteccity.com.sg/promotions/748
https://sunteccity.com.sg/promotions/749
https://sunteccity.com.sg/promotions/750
https://sunteccity.com.sg/promotions/753
https://sunteccity.com.sg/promotions/755
https://sunteccity.com.sg/promotions/756
https://sunteccity.com.sg/promotions/757
https://sunteccity.com.sg/promotions/758
https://sunteccity.com.sg/promotions/759
https://sunteccity.com.sg/promotions/760
https://sunteccity.com.sg/promotions/761
https://sunteccity.com.sg/promotions/763
https://sunteccity.com.sg/promotions/765
https://sunteccity.com.sg/promotions/730
https://sunteccity.com.sg/promotions/734
https://sunteccity.com.sg/promotions/623

tkinter scrollbar only scrolls downwards and cuts off content

copy iconCopydownload iconDownload
import tkinter as tk

class Example:
    def __init__(self):
        self.root = tk.Tk()
        test_frame = tk.Frame(self.root,height=200,width=400,bg='orange')
        test_frame.pack()
        self.DISPLAY_WIDTH = 200
        self.DISPLAY_HEIGHT= 200
        self.create_holder()
        self.create_displays()
        self.add_scrollbars()
        self.populate_holder()
    def create_holder(self):
        '''creates a canvas for the displays and is needed
         to have a common border/window'''
        self.holder = tk.Canvas(self.root,width=self.DISPLAY_WIDTH*2,height=self.DISPLAY_HEIGHT)
        self.holder_frame = tk.Frame(self.holder)
        self.holder.create_window((5, 6), window=self.holder_frame, anchor="nw")
        self.holder.pack()
    def create_displays(self):
        '''creates 2 displays to have seperate scrollregions'''
        self.cnvs1 = tk.Canvas(self.holder_frame,
                               width=self.DISPLAY_WIDTH,
                               height=self.DISPLAY_HEIGHT)
        self.cnvs2 = tk.Canvas(self.holder_frame,
                               width=self.DISPLAY_WIDTH,
                               height=self.DISPLAY_HEIGHT)
        self.lf1 = tk.Frame(self.cnvs1);self.cnvs1.create_window((5, 6), window=self.lf1, anchor="nw")
        self.lf2 = tk.Frame(self.cnvs2);self.cnvs2.create_window((5, 6), window=self.lf2, anchor="nw")
    def add_scrollbars(self):        
        self.vsb1 = tk.Scrollbar(self.holder_frame, orient="vertical", command=self.cnvs1.yview)
        self.vsb2 = tk.Scrollbar(self.holder_frame, orient="vertical", command=self.cnvs2.yview)        
        self.cnvs1.configure(yscrollcommand=self.vsb1.set)
        self.lf1.bind("<Configure>", self.onFrameConfigure)
        self.cnvs2.configure(yscrollcommand=self.vsb2.set)
        self.lf2.bind("<Configure>", self.onFrameConfigure)
    def populate_holder(self):
        self.cnvs1.pack(side="left", fill="both", expand=True)
        self.vsb1.pack(side="left", fill="y")
        self.cnvs2.pack(side="right", fill="both", expand=True)
        self.vsb2.pack(side="right", fill="y")

        for i in range(20):
            button = tk.Button(self.holder_frame,text="Click me")
            button.config(command=lambda b=button:self.on_click(b))
            button.pack(in_=self.lf1)
    def start(self):
        self.root.mainloop()
    def onFrameConfigure(self, event):
        self.cnvs1.configure(scrollregion=self.cnvs1.bbox("all"))
        self.cnvs2.configure(scrollregion=self.cnvs2.bbox("all"))

    def on_click(self,button):
        current_frame = button.pack_info().get("in")
        new_frame = self.lf1 if current_frame == self.lf2 else self.lf2
        button.pack(in_=new_frame)


Example().start()
-----------------------
import tkinter as tk

class ScrolledButtons(tk.Frame):
    def __init__(self, parent):
        super().__init__(parent)
        self.canvas = tk.Canvas(self)
        self.vsb = tk.Scrollbar(self, command=self.canvas.yview, orient="vertical")
        self.canvas.configure(yscrollcommand=self.vsb.set)

        self.vsb.pack(side="right", fill="y")
        self.canvas.pack(side="left", fill="both", expand=True)

        for n in range(20):
            x = 2
            y = self.lasty + 2
            btn = tk.Button(self.canvas, text=f'Button #{n}', command=lambda te=n: self._on_click(te))
            self.canvas.create_window(20, y, anchor="nw", window=btn)
        bbox = self.canvas.bbox("all")
        self.canvas.configure(scrollregion=(0, 0, bbox[2], bbox[3]))

    @property
    def lasty(self):
        bbox = self.canvas.bbox("all")
        lasty = bbox[3] if bbox else 0
        return lasty

root = tk.Tk()
w = ScrolledButtons(root)
w.pack(fill="both", expand=True)
root.mainloop()

Update the Painted Decoration of The Widget from a Function

copy iconCopydownload iconDownload
 Color _newColor = Colors.red;
 void updateLocationPin(LocationData newLocalData, Uint8List imageData){
     LatLng latLng = LatLng(newLocalData.latitude!, newLocalData.longitude!);
     this.setState(() {
      /* marker = Marker(
         markerId: MarkerId("home"),
         position: latLng,
         rotation: 0.5,
         draggable: false,
         flat: true,
         zIndex: 2,
         anchor: Offset(0.5, 0.5),
         icon: BitmapDescriptor.fromBytes(imageData)
       );*/
       xPosition = latLng.longitude; 
       yPosition = latLng.latitude;
       _newColor = Colors.blue;
       ScaffoldMessenger.of(context).showSnackBar( SnackBar( content: Text("Position: ${xPosition}, ${yPosition}"), duration: Duration(milliseconds: 5000), ), );
     });
   }

  @override
  Widget build(BuildContext context) {
    var dpr = MediaQuery.of(context).devicePixelRatio;
    return Scaffold(
      body: SafeArea(
        child: Stack(
          children: [
            GestureDetector(
              child: InteractiveViewer(
                transformationController: controller,
                constrained: false,
                minScale: 0.1,
                maxScale: 1.0,
                child: Stack(children: [
                  Image.asset(
                    "assets/images/$level",
                  ),
                  Positioned(
                    left: xPosition,
                    top: yPosition,
                    child: Container(
                      width: 50.0 / dpr,
                      height: 50.0 / dpr,
                      decoration: BoxDecoration(
                        shape: BoxShape.circle,
                        color: _newColor,
                      ),
                    ),
                  ),
                ]),
                boundaryMargin: EdgeInsets.all(100),
              ),
            ),
          ],
        ),
      ),
    );
  }

Regex (PHP) to extract a sentence that contains a link

copy iconCopydownload iconDownload
$input = "I don't want this piece! This is the <a href='https://example.com/my-sentence'>sentence</a> I want. In don't want this piece either";
$filter = "sentence";
$regex = '~\b(?:[^.?!]|https?://[^<>\s"\']++)*?'.preg_quote($filter, '~').'(?:[^.?!]|https?://[^<>\s"\']++)*~u';
if (preg_match_all($regex, $input, $match)){
  print_r( array_map(function($x) {return strip_tags($x);}, $match[0]) );
}
Array
(
    [0] => This is the sentence I want
)
-----------------------
$input = "I don't want this piece! This is the <a href='https://example.com/my-sentence'>sentence</a> I want. In don't want this piece either";
$filter = "sentence";
$regex = '~\b(?:[^.?!]|https?://[^<>\s"\']++)*?'.preg_quote($filter, '~').'(?:[^.?!]|https?://[^<>\s"\']++)*~u';
if (preg_match_all($regex, $input, $match)){
  print_r( array_map(function($x) {return strip_tags($x);}, $match[0]) );
}
Array
(
    [0] => This is the sentence I want
)

Control whether a link is clickable or not

copy iconCopydownload iconDownload
<a class="lnkCustomer" data-link="http://localhost/viewcustomer1" data-customerno="111" data-auth>View</a>
<a class="lnkCustomer" data-link="http://localhost/viewcustomer2" data-customerno="237" data-auth>View</a>
<a class="lnkCustomer" data-link="http://localhost/viewcustomer3" data-customerno="237" data-auth>View</a>
    <script type="text/javascript">
        $(".lnkCustomer").click(function (e) {
            var customerNo = $(this).data('customerno');
            var linkToGo = $(this).data('link');
            var anchor = $(this);
            // Check for authorized
            if (anchor.data("authorized")) {
                var win = window.open(linkToGo, '_blank');
            }else{
                $.ajax(
                {
                    url: './checkcustomer.php',
                    type: 'POST',
                    data: { customerNo: customerNo },
                    cache: false,
                    success: function (result) {
                        if (result == 'authorized') {
                            anchor.data("authorized", true);
                            //new code
                            anchor.attr("href", linkToGo);
                            anchor.click();
                            // Dont us this due to popup blocker
                            //var win = window.open(linkToGo, '_blank');
                        }
                        else {
                            // Show a message in a alert or div
                            alert('Not authorized');
                        }
                    }
                });

            }
        });
    </script>
-----------------------
$('.lnkCustomer').on('click', function(e) {
  e.preventDefault(); //makes anchor click do nothing
  let href = this.href;
  
//pretend this is the call back from your ajax call
//$.ajax(
//  success: function(result) {
  if (result.success) {
    window.open(href, '_blank'); //what an anchor click does when not prevented
  } else {
    alert('Not authorized');
  }
});
-----------------------
var anchor = $(this);
var anchorEl = $(this)[0];
anchorEl.click();
-----------------------
var anchor = $(this);
var anchorEl = $(this)[0];
anchorEl.click();
-----------------------
// A function to actually open the new page, since we need to do this in
// more than one place.
function goToLink(anchor) {
    let href=anchor.attr('href');
    window.open(href, '_blank');
}

$(".lnkCustomer").click(function(e) {

  // Prevent the default action this event would normally trigger from 
  // happening - in this case, navigating to the target href.
  e.preventDefault();

  var customerNo = $(this).data('customerno');
  var anchor = $(this);

  // Check for authorized, and open the link if so
  if (anchor.data("authorized")) {
    alert("Already authorized, let's go!");
    goToLink(anchor);
  }
  
  // https://jsonplaceholder.typicode.com/ is a dummy REST JSON generator.
  // Let's use it to simulate your AJAX call.  User ID 1's username is Bret,
  // user ID 2's username is Antonette.  Let's use customerNo in the URL to
  // retrieve user ID 1 or 2, and simply allow the click if the username is
  // Antonette.
  
  // First build the URL:
  let url = 'https://jsonplaceholder.typicode.com/users/' + customerNo

  $.ajax({
    url: url,
    type: 'GET',
    dataType: 'json',
    data: {
      customerNo: customerNo
    },
    cache: false,
    success: function(result) {
      if (result.username === 'Antonette') {
        // Authorize and go
        alert("Authorization success, let's go!");
        anchor.data("authorized", true);
        goToLink(anchor);
      } else {
        // Show a message in a alert or div
        alert('Not authorized');
      }
    }
  });

  // Default to false (Do not process anchor)
  return false;
});
<ul>
  <li><a class="lnkCustomer" href="https://google.com/" target="_blank" data-customerno="1">Google (no go)</a></li>

  <li><a class="lnkCustomer" href="https://stackoverflow.com/" target="_blank" data-customerno="2">Stackoverflow (allowed)</a></li>
</ul>
-----------------------
// A function to actually open the new page, since we need to do this in
// more than one place.
function goToLink(anchor) {
    let href=anchor.attr('href');
    window.open(href, '_blank');
}

$(".lnkCustomer").click(function(e) {

  // Prevent the default action this event would normally trigger from 
  // happening - in this case, navigating to the target href.
  e.preventDefault();

  var customerNo = $(this).data('customerno');
  var anchor = $(this);

  // Check for authorized, and open the link if so
  if (anchor.data("authorized")) {
    alert("Already authorized, let's go!");
    goToLink(anchor);
  }
  
  // https://jsonplaceholder.typicode.com/ is a dummy REST JSON generator.
  // Let's use it to simulate your AJAX call.  User ID 1's username is Bret,
  // user ID 2's username is Antonette.  Let's use customerNo in the URL to
  // retrieve user ID 1 or 2, and simply allow the click if the username is
  // Antonette.
  
  // First build the URL:
  let url = 'https://jsonplaceholder.typicode.com/users/' + customerNo

  $.ajax({
    url: url,
    type: 'GET',
    dataType: 'json',
    data: {
      customerNo: customerNo
    },
    cache: false,
    success: function(result) {
      if (result.username === 'Antonette') {
        // Authorize and go
        alert("Authorization success, let's go!");
        anchor.data("authorized", true);
        goToLink(anchor);
      } else {
        // Show a message in a alert or div
        alert('Not authorized');
      }
    }
  });

  // Default to false (Do not process anchor)
  return false;
});
<ul>
  <li><a class="lnkCustomer" href="https://google.com/" target="_blank" data-customerno="1">Google (no go)</a></li>

  <li><a class="lnkCustomer" href="https://stackoverflow.com/" target="_blank" data-customerno="2">Stackoverflow (allowed)</a></li>
</ul>

Why is replicateM (length xs) m way more efficient than sequenceA (fmap (const m) xs)?

copy iconCopydownload iconDownload
{-# NOINLINE sequenceA' #-}
sequenceA' :: [St x] -> St [x]
sequenceA' = sequenceA
readRest = replicateM (length anchors - 1) (getIntegrals n)
solve = do
  n <- getIntegral
solve = do
  !n <- getIntegral
-----------------------
{-# NOINLINE sequenceA' #-}
sequenceA' :: [St x] -> St [x]
sequenceA' = sequenceA
readRest = replicateM (length anchors - 1) (getIntegrals n)
solve = do
  n <- getIntegral
solve = do
  !n <- getIntegral
-----------------------
{-# NOINLINE sequenceA' #-}
sequenceA' :: [St x] -> St [x]
sequenceA' = sequenceA
readRest = replicateM (length anchors - 1) (getIntegrals n)
solve = do
  n <- getIntegral
solve = do
  !n <- getIntegral
-----------------------
{-# NOINLINE sequenceA' #-}
sequenceA' :: [St x] -> St [x]
sequenceA' = sequenceA
readRest = replicateM (length anchors - 1) (getIntegrals n)
solve = do
  n <- getIntegral
solve = do
  !n <- getIntegral

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QUESTION

Solana Anchor: How to make #[account(seeds)] for/ read associated accounts?

Asked 2022-Apr-04 at 21:21

in the Basic-5 tutorial of the project-serum/anchor repo How can I replace #[associated] with something like this:

#[account(seeds = [user_data.deposit_last.as_ref(), &[user_data.__nonce]])]

There is something not correct above, then Anchor fails to read the associated account's values

const userData = await program.account.userData.associated(wallet1, usdcMint);

So what is the correct way to replace this soon-to-be-deprecated #[associated] above the associated account struct?

#[associated]
#[derive(Default)]
pub struct UserData {
  pub authority: Pubkey,
  pub deposit_last: i64,
  pub shares: u64,
  pub reward_debt: u64,
}

//UserData is initialized here first
#[derive(Accounts)]
pub struct Initialize<'info> {
  #[account(init, associated = authority, with = usdc_mint)]
  pub user_data: ProgramAccount<'info, UserData>,
...
}

ANSWER

Answered 2022-Apr-04 at 21:21

So the seed approach is a PDA, which is actually what #associated was using underneath the hood

You will need a function that initializes the seed with the below init and payer trait. payer should also be the same user who is actually paying the for transaction.

Please note that #[instruction(bump: u8] is matching the signature of the function here, hence you will need to pass in the bump in the signature as the first argument.

#[instruction(bump: u8)]
pub struct Ctx<'info> {
  #[account(init, seeds = [user_data.deposit_last.as_ref(), &[bump]], payer = payer)]
  pub user_data = ProgramAccount<'info, UserData>,
}

Later on for other functions if you want just want to read the account, you can just use

#[account(seeds = [user_data.deposit_last.as_ref(), &[user_data.__nonce]])]
pub user_data = ProgramAccount<'info, UserData>,

Change your account data to use #[account] instead of #[associated]

#[account]
#[derive(Default)]
pub struct UserData {
  pub authority: Pubkey,
  pub deposit_last: i64,
  pub shares: u64,
  pub reward_debt: u64,
}

Source https://stackoverflow.com/questions/68748932

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install anchor

For a quickstart guide and in depth tutorials, see the anchor book and the older documentation that is being phased out. To jump straight to examples, go here. For the latest Rust and TypeScript API documentation, see docs.rs and the typedoc.

Support

Thank you for your interest in contributing to Anchor! Please see the CONTRIBUTING.md to learn how.

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