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How do BitTorrent magnet links work?
For the first time I used a magnet link . Curious about how it works, I looked up the specs and didn't find any answers. The wiki says xt means "exact topic" and is followed by the format ( btih in this case) with a SHA1 hash. I saw base32 mentioned, knowing it's 5 bits per character and 32 char...
App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
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概述
Dividing Work
Developer 1 Work In App Inventor
Design View
Blocks Editor
Download Source Code
Developer 2 Work In App Inventor
Design View
Blocks Editor
Download Source Code
Merging into one Project
Launch the App Inventor Merger
Find and Load Both Projects
Merge the Projects
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What's the difference between unit, functional, acceptance, and integration tests? [closed]
What is the difference between unit, functional, acceptance, and integration testing (and any other types of tests that I failed to mention)?
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How to add a custom right-click menu to a webpage?
I want to add a custom right-click menu to my web application. Can this be done without using any pre-built libraries? If so, how to display a simple custom right-click menu which does not use a 3rd party JavaScript library?
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What does Docker add to lxc-tools (the userspace LXC tools)?
If you take a look at Docker's features, most of them are already provided by LXC.
5 Answers
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MongoDB/NoSQL: Keeping Document Change History
A fairly common requirement in database applications is to track changes to one or more specific entities in a database. I've heard this called row versioning, a log table or a history table (I'm sure there are other names for it). There are a number of ways to approach it in an RDBMS--you can wri...
What is Node.js? [closed]
I don't fully get what Node.js is all about. Maybe it's because I am mainly a web based business application developer. What is it and what is the use of it?
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initializer_list and move semantics
...at won't work as intended; you will still get copies. I'm pretty surprised by this, as I'd thought that initializer_list existed to keep an array of temporaries until they were move'd.
begin and end for initializer_list return const T *, so the result of move in your code is T const && — ...
How do HTML parses work if they're not using regexp?
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Usually by using a tokeniser. The draft HTML5 specification has an extensive algorithm for handling "real world HTML".
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Using getopts to process long and short command line options
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There are three implementations that may be considered:
Bash builtin getopts. This does not support long option names with the double-dash prefix. It only supports single-character options.
BSD UNIX implementation of standalone getopt command (which is what MacOS...