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What are the undocumented features and limitations of the Windows FINDSTR command?
...t is woefully inadequate. There is a wee bit more documentation online at https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/findstr .
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What is the difference between a weak reference and an unowned reference?
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Check out the examples on using strong, weak, and unowned in closures:
https://developer.apple.com/library/ios/documentation/swift/conceptual/swift_programming_language/AutomaticReferenceCounting.html
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What happens to a declared, uninitialized variable in C? Does it have a value?
... why is it this way? A different SO answer deals with that question, see: https://stackoverflow.com/a/2091505/140740
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What is the global interpreter lock (GIL) in CPython?
...use it. Python has a construct called the Global Interpreter Lock (GIL).
https://www.youtube.com/watch?v=ph374fJqFPE
The GIL makes sure that only one of your 'threads' can execute at any one time. A thread acquires the GIL, does a little work, then passes the GIL onto the next thread. This happen...
Why is React's concept of Virtual DOM said to be more performant than dirty model checking?
...nt is limited by UIs. Pete's link above covers more of the perf benefits.
https://news.ycombinator.com/item?id=6937668
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Differences between Oracle JDK and OpenJDK
...ort (LTS). The Oracle JDK has releases planned every 3 years.
Source: https://www.oracle.com/java/java9-screencasts.html?bcid=5582439790001&playerType=single-social&size=events
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LinkedBlockingQueue vs ConcurrentLinkedQueue
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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...节数组，并指定 UrsAI2ByteArray 组件。例如：
XmitData 是 https://bbs.tsingfun.com/thread-1648-1-1.html 扩展的一个实例。这是块概述中的最后一项：
发送到多播组
发送到多播组与“正常”发送没有什么不同。作为 Remote...
Why doesn't Java allow generic subclasses of Throwable?
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Why does git-rebase give me merge conflicts when all I'm doing is squashing commits?
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