大约有 40,000 项符合查询结果(耗时:0.0490秒) [XML]

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Why use apparently meaningless do-while and if-else statements in macros?

...into if (corge) f(corge); g(corge); else gralt(); which is syntactically incorrect, as the else is no longer associated with the if. It doesn't help to wrap things in curly braces within the macro, because a semicolon after the braces is syntactically incorrect. if (corge) {f(corge); g(co...
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Could not reserve enough space for object heap

... Anyone found a solution that actually work 100% of the time? This solution solves the problem temporarily but then suddenly it comes back. I've got 16GB ram and I'm tired of this sh*t. Everything was better in the old days :[ – Nilzor ...
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Readonly Properties in Objective-C?

...ing"; // Notice the underscore prefix of var name. That’s it, that’s all you need. No muss, no fuss. Details As of Xcode 4.4 and LLVM Compiler 4.0 (New Features in Xcode 4.4), you need not mess with the chores discussed in the other answers: The synthesize keyword Declaring a variable Re-...
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Convert hex string to int in Python

... 16) With the 0x prefix, Python can distinguish hex and decimal automatically. >>> print int("0xdeadbeef", 0) 3735928559 >>> print int("10", 0) 10 (You must specify 0 as the base in order to invoke this prefix-guessing behavior; omitting the second parameter means to assume ba...
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Iterating over each line of ls -l output

... instead of parsing output of "ls -l" line by line, you could iterate over all files and do an "ls -l" for each individual file like this: for x in * ; do echo `ls -ld $x` ; done share | improve t...
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Pass Additional ViewData to a Strongly-Typed Partial View

...lso like to provide it with some additional ViewData which I create dynamically in the containing page. How can I pass both my strongly typed object and my custom ViewData to the partial view with the RenderPartial call? ...
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How would I create a UIAlertView in Swift?

... the handler might need to pass the chosen title off to some other method call – Honey Nov 30 '16 at 17:27 ...
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Generate random numbers using C++11 random library

... functions and why not to use rand(). In it, he included a slide that basically solves your question. I've copied the code from that slide below. You can see his full talk here: http://channel9.msdn.com/Events/GoingNative/2013/rand-Considered-Harmful #include <random> #include <iostream&g...
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How to initialize private static members in C++?

...t be done outside of any function. Note: Matt Curtis: points out that C++ allows the simplification of the above if the static member variable is of const int type (e.g. int, bool, char). You can then declare and initialize the member variable directly inside the class declaration in the header fil...
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Duplicating a MySQL table, indices, and data

... This should have been the accepted answer. As this copies all the indexes including primary key and auto_increment – Channaveer Hakari Oct 11 '18 at 6:06 add ...