anchor | EOSIO Desktop Wallet and Authenticator | Blockchain library
kandi X-RAY | anchor Summary
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Security
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- Create an account .
- Get block explorer .
- Validate a node
- Get a currency balance balance
- Signature .
- Unlock the password of the wallet .
- Unlock a wallet by it s account ID .
- Get an account by key
- Set state of the stake process .
- Get producers .
anchor Key Features
anchor Examples and Code Snippets
Trending Discussions on anchor
Trending Discussions on anchor
QUESTION
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 21:21So 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,
}
QUESTION
I am using ModalBottomSheetLayout in Jetpack Compose. Whenever it is shown with modalBottomSheetState.show(), it shows HalfExpanded or Expanded depending on the height of its content. This is from the source code:
val anchors = if (sheetHeight < fullHeight / 2) {
mapOf(
fullHeight to Hidden,
fullHeight - sheetHeight to Expanded
)
} else {
mapOf(
fullHeight to Hidden,
fullHeight / 2 to HalfExpanded,
max(0f, fullHeight - sheetHeight) to Expanded
)
}
Modifier.swipeable(
state = sheetState,
anchors = anchors,
orientation = Orientation.Vertical,
enabled = sheetState.currentValue != Hidden,
resistance = null
)
Then show() works like here:
internal val isHalfExpandedEnabled: Boolean
get() = anchors.values.contains(HalfExpanded)
/**
* Show the bottom sheet with animation and suspend until it's shown. If half expand is
* enabled, the bottom sheet will be half expanded. Otherwise it will be fully expanded.
*
* @throws [CancellationException] if the animation is interrupted
*/
suspend fun show() {
val targetValue =
if (isHalfExpandedEnabled) HalfExpanded
else Expanded
animateTo(targetValue = targetValue)
}
I wonder if we can set it to always Expanded somehow
ANSWER
Answered 2021-Aug-23 at 09:56You can use:
scope.launch { state.animateTo(ModalBottomSheetValue.Expanded) }
instead of
scope.launch { state.show() }
QUESTION
So I'm try to use ScrollViewReader to programmatically scroll a horizontal scroll view. I thought it would work like scrollToItem with .centeredHorizontally in UIKit, and for the most part it does, but the last few elements in the scroll view are being forcefully scrolled to the center of the screen, despite the fact that the scroll view isn't normally able to scroll that far over (without snapping back after releasing the drag, at least). This ends up creating white space across the trailing half of the screen.
I've seen some other questions about this and it seems like the general opinion is that it's not a bug? On the one hand I suppose we're telling the scroll view to center the item, and it's doing just that -- so, not a bug? On the other hand, that's not how similar functionality worked in UIKit. Also, this behavior is only happening on the trailing end of the scroll view! If it was the intended behavior I would expect that scrolling to the first element in the scroll view using .center anchor would force it into the center of the screen and leave leading white space, but this doesn't happen.
Is there an elegant solution to this? Or do we have to calculate the width of our elements + spacing and figure out based on the screen width whether we should anchor .center or just scroll to the last element with anchor .trailing in order to replicate the UIKit behavior?
ANSWER
Answered 2021-Jul-25 at 06:31I found a package (Amzd/ScrollViewProxy) that was made before ScrollViewReader was released that functions much the same as ScrollViewReader, but also seems to not have the bug (if it is a bug) detailed in the question.
Usage examples can be seen on the repository page, but here's a quick minimal example.
ScrollView(.horizontal) { scrollProxy in
ForEach(sections) { section in
Text(section.text)
.scrollId(section.id)
}
.onChange(of: index) {
scrollProxy.scrollTo(
sections[index].id,
alignment: .center
)
}
}
The package adds a convenience init to ScrollView to give access to the scrollProxy.
QUESTION
I would like to send arguments when I call an anchor with bitbucket pipelines
Here is the file I am using, I have to call after-script because I need to push to a certain S3 bucket
definitions:
steps:
- step: &node-build
name: Build React app
image: node:lts-alpine
script:
- npm install --no-optional
- npm run build
artifacts:
- build/**
- step: &aws-ecr-s3
name: AWS S3 deployment
image: amazon/aws-cli
script:
- aws configure set aws_access_key_id "${AWS_KEY}"
- aws configure set aws_secret_access_key "${AWS_SECRET}"
pipelines:
branches:
master:
- step: *node-build
- step:
<<: *aws-ecr-s3
after-script:
- aws s3 cp ./build s3://my-app-site-dev --recursive
staging:
- step: *node-build
- step:
<<: *aws-ecr-s3
after-script:
- aws s3 cp ./build s3://my-app-site-uat --recursive
I am trying to do something like the following to not have to use that after-script part
definitions:
steps:
- step: &node-build
name: Build React app
image: node:lts-alpine
script:
- npm install --no-optional
- npm run build
artifacts:
- build/**
- step: &aws-ecr-s3 $FIRST-ARGUMENT
name: AWS S3 deployment
image: amazon/aws-cli
script:
- aws configure set aws_access_key_id "${AWS_KEY}"
- aws configure set aws_secret_access_key "${AWS_SECRET}"
- aws s3 cp ./build s3://${FIRST-ARGUMENT} --recursive
pipelines:
branches:
master:
- step: *node-build
- step: *aws-ecr-s3 my-app-site-dev
staging:
- step: *node-build
- step: *aws-ecr-s3 my-app-site-uat
ANSWER
Answered 2022-Jan-21 at 19:45To the best of my knowledge, you can only override particular values of YAML anchors. Attempts to 'pass arguments' won't work.
Instead, Bitbucket Pipelines provide Deployments - an ad-hoc way to assign different values to your variables depending on the environment. You'll need to create two deployments (say, dev and uat), and use them when referring to a step:
pipelines:
branches:
master:
- step: *node-build
<<: *pushImage
deployment: uat
staging:
- step: *node-build
<<: *pushImage
deployment: dev
QUESTION
Scrapping links should be a simple feat, usually just grabbing the src value of the a tag.
I recently came across this website (https://sunteccity.com.sg/promotions) where the href value of a tags of each item cannot be found, but the redirection still works. I'm trying to figure out a way to grab the items and their corresponding links. My typical python selenium code looks something as such
all_items = bot.find_elements_by_class_name('thumb-img')
for promo in all_items:
a = promo.find_elements_by_tag_name("a")
print("a[0]: ", a[0].get_attribute("href"))
However, I can't seem to retrieve any href, onclick attributes, and I'm wondering if this is even possible. I noticed that I couldn't do a right-click, open link in new tab as well.
Are there any ways around getting the links of all these items?
Edit: Are there any ways to retrieve all the links of the items on the pages?
i.e.
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
...
ANSWER
Answered 2022-Jan-15 at 19:47You are using a wrong locator. It brings you a lot of irrelevant elements.
Instead of find_elements_by_class_name('thumb-img') please try find_elements_by_css_selector('.collections-page .thumb-img') so your code will be
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"))
You can also get the desired links directly by .collections-page .thumb-img a locator so that your code could be:
links = bot.find_elements_by_css_selector('.collections-page .thumb-img a')
for link in links:
print(link.get_attribute("href"))
QUESTION
I'm currently creating a vue3 cli app that uses vue-leaflet (the vue3 compatible version)
Everything works great on my local dev environment but once my app is built the map doesn't load, even when I resize like this thread explains well.
I tried using the leafletObject.invalidateSize() method but nothing changed.
My map is a component called using a v-if on first call (switch between a list view and the map) and a v-show once it has been initialized
Here is what I get on my dev version when I use npm run serve
Here is the result on the prod version
Here is the relevant part of my code, I can add more if you think more code needs to be shown
JS
Is there a way to check if the invalidateSize() methods triggers ? My console.log get no errors but nothing changes so maybe it doesn't trigger the method ?
ANSWER
Answered 2022-Jan-03 at 12:00Rather looks like the Leaflet CSS is incorrectly loaded in your production bundle: tiles are scrambled up, no zoom and attribution controls.
QUESTION
EDIT [resolved]
based on the answer from Thingamabobs below, the approach simply turns out to be making sure the elements you spawn are allocated to correct parents.
It is worthwhile to create a frame just to hold every scrollable element since you can't move widgets around between parents when using pack/place. So a common parents between all movable elements will give you the freedom to move them around, again just create a holder frame. See the answer and discussion below for more details.
EDIT2
Bryan's answer below has very good info and an alternate approach using just a canvas. The core concepts still stand the same.
original question begins here
The situationSo based on this answer by Bryan, I used this approach to spawn widgets on a scrollable frame (which is basically a Canvas wrapping a frame inside as we know cause Frames don't have scroll attributes).
The widgets in this case are just tk.Buttons which I spawn in a loop using lambda to preserve state. That aspect is completely fine.
Now everything works fine except when I spawn more elements (again just buttons), they seem to be cut off. and I can't seem to scroll down to see the remaining ones. I am only able to scroll upwards only to see empty space.
please see the video below to see what I mean (excuse my horrible color choices, this is for a quick demo)
In the video, there are more elements below template47 but I can not scroll to them. I can scroll upwards but it's just lonely up there. All the names are actually buttons with zero bd and HLthickness.
To begin, my first instinct was to attach a ttk.scrollbar to the canvas+frame, which I did but observed the exact same behavior.
Then I tried to see if i could use .moveTo('1.0') to scroll down to last entry and then since upward scrolling works already, shouldn't have an issue. But this didn't do anything either. Still the elements were cut off, and it obviously messed up upward scrolling too.
I don't think I can use pack/grid geoManagers since as the answer by bryan i linked to above suggests, using place with its in_ arg is the preferred way. If it is possible otherwise, let me know though.
as depicted in the answer linked above, I also have two frames, and I'm using the on_click callback function to switch parents (a lot like in example code in answer). Turned out place was the best bet to achieve this. and it is, all of that aspect is working well. It's just the scroll thingy which doesn't work.
some code (dare i say MCVE)how i bind to mousewheel
def _bound_to_mousewheel(self, event):
self.canvas.bind_all("", self._on_mousewheel)
def _unbound_to_mousewheel(self, event):
self.canvas.unbind_all("")
def _on_mousewheel(self, event):
self.canvas.yview_scroll(int(-1 * (event.delta / 120)), "units")
creating the window
self.canvas.create_window((5, 6), window=self.scrolled_frame, anchor="w")
ad of course the widgets inside
for f in self.fav_templates:
btn = tk.Button(self.root, text='text', command=lambda te=f: self._on_click(te))
btn.place(in_=self.ft_frame, x=20, y=p)
I'm sure above snippets would give idea of what I've done. If someone needs me to create a complete MCVE they can run, happy to do that, lemme know.
What did I miss in the setup? any ideas or suggestion are welcome.
Thank You :)
ANSWER
Answered 2021-Dec-27 at 14:37The main issue is that you are using place and with place you will be the allmighty over the widget, means there will be no requested size to the master or any other magic tkinter provides in the background. So I do recommand to use another geometry manager that does that magic for you like pack. Also note that I set the anchor to nw.
In addition it appears that you can only use the optional argument in_ in a common master. So the key of that concept is to have an holder frame that is used as master parameter and use the in_ for children that are able to hold widgets.
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("", self.onFrameConfigure)
self.cnvs2.configure(yscrollcommand=self.vsb2.set)
self.lf2.bind("", 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()
QUESTION
I don't know if the title is worded correctly, but I will try my best to explain my problem. I now have a function that updates the current user's location, which works fine. The problem is that the painted pointer remains at that exact position because the decoration is painted once inside the widget and never changes.
I have looked at how google does it with the marker object, but that didn't seem to work for my app because I am not using a normal map.
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;
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: Colors.red,
),
),
),
]),
boundaryMargin: EdgeInsets.all(100),
),
),
],
),
),
);
}
How would I update the painted circle every time the updateLocationPin gets called? I should have probably pointed this out beforehand, but I am a complete beginner trying to learn by doing some self-coding, and any problems that I might have missed or incorrect code is highly appreciated if anyone would point it out. Thanks in advance, and happy Christmas to anyone reading.
ANSWER
Answered 2021-Dec-28 at 02:03try this:
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),
),
),
],
),
),
);
}
QUESTION
I want to retrieve the entire sentence that surrounds a link, delimited by punctuation (such as . or ! or ? or newline).
The purpose is to provide a better context for the link.
So for example if i have this...
$input = "I don't want this piece! This is the sentence I want. In don't want this piece either";
$filter = "https://example.com/my-sentence";
... I need to get to that...
$output = "This is the sentence I want.";
So far, I managed to isolate a sentence that doesn't contain tags, like this:
$input = "I don't want this piece. This is the sentence I want. In don't want this piece either";
$filter = "sentence";
$regex = '/[A-Z][^\\.;]*('.$filter.')[^\\.;]*/';
if (preg_match($regex, $input, $match))
$output = $match[0];
This works just fine. Next, I don't know how to get around the punctuation inside the url.
I explored isolating the anchor first and regexing that, which works on any single example but may generate collisions in the wild (anchors duplicating other anchors or random text).
Another way to go seems to be strip_tags, something like...
$input = strip_tags($input);
... the problem being that I need them both stripped and not stripped at the same time.
Maybe a more specific regex or some smart wrapping of the functions could bring an easy way out of this, or maybe it's a dead end and some other approach is required, I don't know, but right now I'm stuck, please help!
ANSWER
Answered 2021-Dec-21 at 10:27Granted you do not care about abbreviations, you can match either a char other than ?, ! and ., or a link-like substring any zero or more times before and after a specific filter string:
$input = "I don't want this piece! This is the sentence 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]) );
}
See the PHP demo. Output:
Array
(
[0] => This is the sentence I want
)
See the regex demo. Details:
\b- a word boundary(?:[^.?!]|https?://[^<>\s"\']++)*?- zero or more occurrences, as few as possible, of either a char other than.,?and!orhttp, an optionals,://and then one or more chars other than<,>, whitespace,",'sentence- a filter string(?:[^.?!]|https?://[^<>\s"\']++)*- zero or more occurrences, as many as possible, of either a char other than.,?and!orhttp, an optionals,://and then one or more chars other than<,>, whitespace,",'
QUESTION
I want to control whether a link is clickable or an error should be displayed (Based on result of an ajax call).
I get to the point where I am able to set the link as "allowed to be clicked":
// Authorized
anchor.data("authorized", true);
However when I run this code, the link still does not open. Ideally once the ajax call is complete, it should invoke the click event. I believe the issue is in this line.
// Trigger Anchor
anchor.click();
This is the entire code:
Notes: I am using class instead of id in the anchor because I have various links that will trigger this event. However as you can see, this should not be an issue since I am always referring to the individual object:
var anchor = $(this);
ANSWER
Answered 2021-Dec-06 at 03:56I think we cannot overwrite the default behavior of the anchor tag but we can work around it. In this solution, I have replaced href with data-link. And mimic the anchor mechanism with window.open.
Code :
Please note :
- New note for security: As you can see we are using quite a visible data-link and anyone with enough effort can visit the link whether it is authorized or not. If the above answer gets you through the popup blocker, the next few things you can do is maybe only fetch accessible links from the start OR add a "show links" button and then fetch only accessible links to the user. You can do it via ajax. and also you will not need this JS/Jquery code. OR assign a random number to data-link and then fetch in your PHP code see if it is authorized if it is then only return accessible HTTP link. many ways to improve.
- You can use CSS to style the anchor tags, which I have not in the solution
- One method I tried was with use of
preventDeault, but it do not work
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install anchor
The link from the greymass.com website.
The README (this file) or releases section of this repository at github.com/greymass/anchor.
If you'd rather build the application yourself, please ensure you have nodejs/npm/yarn already installed locally. Note: If you are configuring this Electron application within a Windows development environment, it will involve additional steps.
MacOS: npm run package-mac
Linux: npm run package-linux
Windows: npm run package-win
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