大约有 47,000 项符合查询结果(耗时:0.0421秒) [XML]

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Convert char to int in C and C++

How do I convert a char to an int in C and C++? 12 Answers 12 ...
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Getters \ setters for dummies

I've been trying to get my head around getters and setters and its not sinking in. I've read JavaScript Getters and Setters and Defining Getters and Setters and just not getting it. ...
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Booleans, conditional operators and autoboxing

...time: E1: `true ? returnsNull() : false` - boolean (auto-unboxing 2nd operand to boolean) E2: `true ? null : false` - Boolean (autoboxing of 3rd operand to Boolean) See Java Language Specification, section 15.25 Conditional Operator ? : For E1, the types of the 2nd and 3rd operands are Boolean...
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Mapping two integers to one, in a unique and deterministic way

Imagine two positive integers A and B. I want to combine these two into a single integer C. 18 Answers ...
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Reorder levels of a factor without changing order of values

I have data frame with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be. ...
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How do I put an already-running process under nohup?

I have a process that is already running for a long time and don't want to end it. 11 Answers ...
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How do you know what to test when writing unit tests? [closed]

... code, or a completely new feature. Start simple. Don’t go running off and trying to get your head round a testing framework as well as being TDD-esque. Debug.Assert works fine. Use it as a starting point. It doesn’t mess with your project or create dependencies. Start positive. Yo...
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What's the difference between lists and tuples?

...cture, lists have order. Using this distinction makes code more explicit and understandable. One example would be pairs of page and line number to reference locations in a book, e.g.: my_location = (42, 11) # page number, line number You can then use this as a key in a dictionary to store not...
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Strengths of Shell Scripting compared to Python [closed]

...scripting few times but was driven away by the syntax. Then I found Python and was able to do most of the things a shell script can do in Python. I am now not sure whether I should invest my time in learning shell scripting anymore. So I want to ask: ...
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Why does Eclipse complain about @Override on interface methods?

...n Java 5. Make sure that your IDE projects are setup to use a Java 6 JRE, and that the "source compatibility" is set to 1.6 or greater: Open the Window > Preferences dialog Browse to Java > Compiler. There, set the "Compiler compliance level" to 1.6. Remember that Eclipse can override th...