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Difference between sh and bash
When writing shell programs, we often use /bin/sh and /bin/bash . I usually use bash , but I don't know what's the difference between them.
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In Scala, what exactly does 'val a: A = _' (underscore) mean?
What exactly does val a: A = _ initialize a value to? Is this a typed null? Thanks.
2 Answers
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Is it possible to serialize and deserialize a class in C++?
Is it possible to serialize and deserialize a class in C++?
13 Answers
13
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What's the best way of implementing a thread-safe Dictionary?
I was able to implement a thread-safe Dictionary in C# by deriving from IDictionary and defining a private SyncRoot object:
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Why use strict and warnings?
It seems to me that many of the questions in the Perl tag could be solved if people would use:
8 Answers
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Do unix timestamps change across timezones?
As the subject asks; do UNIX timestamps change in each timezone?
5 Answers
5
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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
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