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When do I use a dot, arrow, or double colon to refer to members of a class in C++?
Coming from other C-derived languages (like Java or C#) to C++, it is at first very confusing that C++ has three ways to refer to members of a class: a::b , a.b , and a->b . When do I use which one of these operators?
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Testing whether a value is odd or even
...sOdd(n) {
return Math.abs(n % 2) == 1;
}
You can check that any value in Javascript can be coerced to a number with:
Number.isFinite(parseFloat(n))
This check should preferably be done outside the isEven and isOdd functions, so you don't have to duplicate error handling in both functions.
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Merge two Git repositories without breaking file history
I need to merge two Git repositories into a brand new, third repository. I've found many descriptions of how to do this using a subtree merge (for example Jakub Narębski's answer on How do you merge two Git repositories? ) and following those instructions mostly works, except that when I commit...
Regex for splitting a string using space when not surrounded by single or double quotes
I'm new to regular expressions and would appreciate your help. I'm trying to put together an expression that will split the example string using all spaces that are not surrounded by single or double quotes. My last attempt looks like this: (?!") and isn't quite working. It's splitting on the spa...
How do you clone an Array of Objects in Javascript?
...where each object also has references to other objects within the same array?
33 Answers
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How do I launch the Android emulator from the command line?
I'm on Mac, working on Android development from the terminal. I have successfully created the HelloWorld project and now I'm trying to run it from the command line in the Android emulator. Which command runs the emulator for my HelloWorld project?
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“21天教你学会C++” - 创意 - 清泛网 - 专注C/C++及内核技术
“21天教你学会C++”下面是一个《Teach Yourself C++ in 21 Days》的流程图，请各位程序员同仁认真领会。如果有必要，你可以查看这个图书以作参照：http: ...下面是一个《Teach Yourself C++ in 21 Days》的流程图，请各位程序员同仁认真领...
How can I get current date in Android?
I wrote the following code
25 Answers
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Why doesn't list have safe “get” method like dictionary?
...s an associative collection (values are associated with names) where it is inefficient to check if a key is present (and return its value) without throwing an exception, while it is super trivial to avoid exceptions accessing list elements (as the len method is very fast). The .get method allows yo...
Pushing to Git returning Error Code 403 fatal: HTTP request failed
.... I've made some commits and want to push back out to the GitHub server. Using Cygwin on Windows 7 x64.
61 Answers
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