swap | chain atomic swap between the networks | Cryptocurrency library

 by   meherett Python Version: v0.2.3 License: AGPL-3.0

kandi X-RAY | swap Summary

kandi X-RAY | swap Summary

swap is a Python library typically used in Financial Services, Banks, Payments, Blockchain, Cryptocurrency, Ethereum, Bitcoin applications. swap has no bugs, it has no vulnerabilities, it has build file available, it has a Strong Copyleft License and it has high support. You can install using 'pip install swap' or download it from GitHub, PyPI.

A Hash Time Lock contract (HTLC) is essentially a type of payment in which two people agree to a financial arrangement where one party will pay the other party a certain amount of cryptocurrency, such as Bitcoin or Bytom assets. However, because these contracts are Time Locked, the receiving party only has a certain amount of time to accept the payment, otherwise the money can be returned to the sender. Hash time lock contracts can help to eliminate the need for third parties in contracts between two parties. Third parties that are often involved in contracts are lawyers, banks, etc. Lawyers are often required to draw up contracts, and banks are often required to help store money and then transfer it to the receiving party in the contract. With hash time lock contracts, two parties could hypothetically set up contracts and transfer money without the need for third parties. This is because the sending party could create the conditional payment, and then the receiving party could agree to it, receive it, and help validate the transaction in the process. This could potentially revolutionize the way that many businesses interact with one another and dramatically speed up the time that it takes for business deals to be set up.
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            kandi-support Support

              swap has a highly active ecosystem.
              It has 22 star(s) with 4 fork(s). There are 1 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 1 open issues and 1 have been closed. On average issues are closed in 3 days. There are no pull requests.
              It has a positive sentiment in the developer community.
              The latest version of swap is v0.2.3

            kandi-Quality Quality

              swap has 0 bugs and 0 code smells.

            kandi-Security Security

              swap has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              swap code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              swap is licensed under the AGPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              swap releases are available to install and integrate.
              Deployable package is available in PyPI.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              swap saves you 2308 person hours of effort in developing the same functionality from scratch.
              It has 5041 lines of code, 292 functions and 84 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed swap and discovered the below as its top functions. This is intended to give you an instant insight into swap implemented functionality, and help decide if they suit your requirements.
            • Sign a transaction
            • Removes padding from raw bytes
            • Signs a refund transaction
            • Is the transaction raw data raw?
            • The type of unsigned transaction
            • Builds a HTLC contract
            • Check if given address is a valid address
            • Returns the type of an address
            • Get the hash of an address
            • Creates a new HTLC
            • Get the XRC20 decimals of a token
            • Get the Ethereum decimals for a given token
            • Get the balance of the asset
            • Get a list of utxos
            • Return the strength of the mnemonic
            • Returns a list of utxos
            • Get XRC20 decimals
            • Builds a transaction
            • Get the current height
            • Estimate the end block height
            • Decode a Bitcoin transaction raw data
            • Get the Ethereum decimals from a token
            • Sign a refund transaction
            • Submits a transaction
            • Creates a NormalSignature for a transaction
            • Submits a raw binary transaction
            • Signs a transaction
            • Return the transaction raw
            • Return transaction raw
            Get all kandi verified functions for this library.

            swap Key Features

            No Key Features are available at this moment for swap.

            swap Examples and Code Snippets

            Swap,Installation
            Pythondot img1Lines of Code : 2dot img1License : Strong Copyleft (AGPL-3.0)
            copy iconCopy
            $ pip install swap
            
            $ pip install git+git://github.com/meherett/swap.git
              
            Swap,Development
            Pythondot img2Lines of Code : 1dot img2License : Strong Copyleft (AGPL-3.0)
            copy iconCopy
            $ pip install -e .[tests,docs] -r requirements.txt
              
            Swap,Testing
            Pythondot img3Lines of Code : 1dot img3License : Strong Copyleft (AGPL-3.0)
            copy iconCopy
            $ pytest
              

            Community Discussions

            QUESTION

            How can I avoid bundling Vuetify and use from CDN?
            Asked 2021-Jun-16 at 01:31

            I'm trying to decrease the bundle size of my Vue project, which scaffolded by the vue-cli, by using CDN of firebase, Vue, and Vuetify.

            So, I've added links of these CDN in public/index.html as follow:

            ...

            ANSWER

            Answered 2021-Jun-16 at 01:31

            If you are using vuetify from vue-cli-plugin-vuetify (vue add vuetify), treeshaking and auto component import is enabled by default, by using vuetify-loader.

            If you look into the source code of vue-cli-plugin-vuetify, it only uses vuetify-loader if it is present in your package.json. So removing vuetify-loader from package.json should disable this behavior.

            Source https://stackoverflow.com/questions/67995021

            QUESTION

            Good way to switch between 2 versions of the same dependency in package.json?
            Asked 2021-Jun-15 at 21:43

            Turns out you can't have comments in JSON files, and it's a bit awkward to have people refer to some documentation telling them what line to copy/paste in and where in order to achieve this.

            I think I can make a python script to copy/paste in one of two package.json files depending on what flags they pass in, but that feels overcomplicated.

            I think I can include both dependencies (under different names) but that would create a requirement for both to be available, which is not good either.

            Looking for ideas/thoughts on a good way to accomplish this. I have a release and dev version of the same dependency and I often need to swap between the two. Would like to improve the workflow beyond just having a notepad on the side with the two lines pasted in it...

            ...

            ANSWER

            Answered 2021-Jun-15 at 21:43

            yarn and npm already do this job, why not use them?

            Releases

            Tag the dev versions when you release them

            Source https://stackoverflow.com/questions/67993356

            QUESTION

            How do i add new image on the new card
            Asked 2021-Jun-15 at 19:05

            I'm currently learning HTML, CSS, and JavaScipt. I'm trying to make a basic project, but I'm having problems with adding a new image on the new card. When I click on the 'add item' button, I create a new card with image. However, when I add another card for the second time, my image from the first card that I created will disappear. Can someone help me on how to fix this solution. Thank you.

            ...

            ANSWER

            Answered 2021-Jun-15 at 19:05

            Rather than using two different function, one for adding card image and one for card content, try combining both of them.. here use the code for your reference.

            Source https://stackoverflow.com/questions/67991548

            QUESTION

            How is this code snippet an example of incorrect synchronization?
            Asked 2021-Jun-15 at 12:46

            I am trying to understand the example with incorrect sync code from The Go Memory Model.

            Double-checked locking is an attempt to avoid the overhead of synchronization. For example, the twoprint program might be incorrectly written as:

            ...

            ANSWER

            Answered 2021-Jun-14 at 19:18

            According to the Go memory model:

            https://golang.org/ref/mem

            There are no guarantees that one goroutine will see the operations performed by another goroutine unless there is an explicit synchronization between the two using channels, mutex. etc.

            In your example: the fact that a goroutines sees done=true does not imply it will see a set. This is only guaranteed if there is explicit synchronization between the goroutines.

            The sync.Once probably offers such synchronization, so that's why you have not observed this behavior. There is still a memory race, and on a different platform with a different implementation of sync.Once, things may change.

            Source https://stackoverflow.com/questions/67975948

            QUESTION

            minimum number of swap two adjacent element
            Asked 2021-Jun-15 at 09:30

            How to find the minimum number of swaps two adjacent element of an array so that no element is equal to its index.

            i.e.,

            ...

            ANSWER

            Answered 2021-Jun-15 at 09:30

            Let's call an element that is equal to its position a "wrong" element.

            Let 𝑛 be the number of wrong elements. The goal is to reduce 𝑛 to zero.

            Analysis

            This problem would have been more complex if duplicate values were allowed, but given they are distinct, we can observe the following:

            • A swap is only useful if it reduces 𝑛. If 𝑛 is not decreased by it, there is no way to take benefit from that swap in future swaps.
            • If a swap reduces 𝑛 by 2, it may still not be an optimal swap. For example, if in [1,2,3,4] we first swap (2,3), then we will need 2 more swaps to bring 𝑛 to zero, while this can be solved using just two swaps. We can avoid this by starting with the first pair (or last pair,...) when dealing with a group of adjacent wrong elements.
            Algorithm
            • If the array has only one element and it is wrong -- i.e. the input is [1] -- then there is no solution possible.
            • Iterate through the array from left to right.
            • When arriving at a wrong element, perform a single swap with the next element if there is one, otherwise swap with the previous one.
            • Return the number of swaps made.
            Improvement

            We can actually improve on this, and only count the swaps, but not actually perform them. In that case we must skip the next element when we count a swap of the current element with the next. This is to avoid we would count another swap for it when it is also bad, as the current swap would also resolve that. On the other hand, this swap never makes the next one bad, so when counting this swap we can safely skip checking the next element.

            Implementation

            Here is a JavaScript snippet that returns the result for several inputs:

            Source https://stackoverflow.com/questions/67980711

            QUESTION

            Send mail on_behalf_of with a guest user account
            Asked 2021-Jun-15 at 08:58

            I'm trying to let an api send a mail on behalf of a user.

            I have an UWP application (Azure AD App "A") that posts some data to the API (Azure AD App "B")

            The API are then going to collect some more data and send a mail as the user that posted that data.

            When the post is received by the API the bearer token has "AUD" and "SCP" for the API, now I do a request to Azure AD and swaps the token for a new one with "AUD" and "SCP" for MS Graph API. This works pretty good, until there is a guest user that sends the data. Then I get an "Unauthorized" result back from Graph API.

            I assume the reason is because I get the first token as the guest user and then tries to send mail with an account in another tenant.

            What can I do to bypass this?

            ...

            ANSWER

            Answered 2021-Jun-15 at 02:10

            We can't send mail on_behalf_of with a guest user account because a guest user doesn't have O365 Exchange Online license in this tenant.

            Although maybe the guest user has O365 Exchange Online license in its own tenant, it is not allowed to send mail from this tenant.

            It is expected.

            What can I do to bypass this?

            If you want the guest user to send the mail from this tenant, it's impossible.

            But I think sending mail from its own tenant is not what you want and it will require you to create app registration in that tenant or use multi-tenant app. You need admin permission of that tenant to do that. So it's impossible neither.

            Source https://stackoverflow.com/questions/67935120

            QUESTION

            Bootstrap datepicker displaying empty box
            Asked 2021-Jun-15 at 08:12

            I'm trying to get a bootstrap datepicker to work to update layer dates in my website. However, the problem that I am getting at the moment is that when I click on the datepicker box, the calendar dropdown isn't working at all and it just continues to display an empty box.

            I'm trying to add the datepicker inside a Leaflet textbox control and add the HTML directly into an .innerHTML method. Below is the code for the Leaflet textbox control and the datepicker itself.

            ...

            ANSWER

            Answered 2021-Jun-15 at 08:12

            The fix to this seemed to be to wrap the datepicker in a $(document).ready(function() { }) type function.

            So the full datepicker function from above becomes:

            Source https://stackoverflow.com/questions/67885846

            QUESTION

            A type for functions that pipe into each other
            Asked 2021-Jun-15 at 08:01

            I want to deal with an abstraction where I can store f1, f2, f3, f4, f5... where

            ...

            ANSWER

            Answered 2021-Jun-13 at 04:23

            You can store them with a GADT, like this:

            Source https://stackoverflow.com/questions/67954584

            QUESTION

            Swapping Characters inside an array C++
            Asked 2021-Jun-14 at 19:44

            I'm looking to make a series of flashing lights and I want them to appear on the same line.

            Something like this

            ...

            ANSWER

            Answered 2021-Jun-14 at 19:31

            I am not sure that it is possible for multiple lines, but for one, this is the way in linux:

            Source https://stackoverflow.com/questions/67976089

            QUESTION

            Sorting technique C
            Asked 2021-Jun-14 at 17:34

            I am into programming from past 7-8 months and I generally use selection sort whenever I want to sort arrays or structures. So I got idea and implemented it. selection sort find max OR min value in each loop and place it at one of the border (depends on max or min) and make it out of scope. So I thought why not find max AND min in each loop and move them to borders (min-left and max-right) and reduce the scope from both side by value 1. It would have half of previous time complexity i guess. Here is the code:

            ...

            ANSWER

            Answered 2021-Jun-14 at 15:54

            It would have half of previous time complexity i guess.

            O(0.5 * n^2) is still O(n^2). A good qsort() is expected O(n* ln(n)).

            Is this efficient enough or should I stick with selection sort and qsort.

            Tough to beat decades of many programmers experience.

            Keep in mind qsort() does not have to use the quick sort algorithm. A good qsort() may use a combination of algorithms.

            Source https://stackoverflow.com/questions/67973299

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

            Vulnerabilities

            No vulnerabilities reported

            Install swap

            PIP to install Swap globally, for Linux sudo may be required:.

            Support

            Feel free to open an issue if you find a problem, or a pull request if you've solved an issue. And also any help in testing, development, documentation and other tasks is highly appreciated and useful to the project. There are tasks for contributors of all experience levels. For more information, see the CONTRIBUTING.md file.
            Find more information at:

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