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git recover deleted file where no commit was made after the delete
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edited Mar 3 '14 at 17:55
Alessandro Jacopson
15.3k1212 gold badges8787 silver badges133133 bronze badges
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Measure and Benchmark Time for Ruby Methods
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answered Jul 10 '12 at 4:10
wquistwquist
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How do you check “if not null” with Eloquent?
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422
Eloquent has a method for that (Laravel 4.*/5.*);
Model::whereNotNull('sent_at')
Laravel 3:...
Difference between a Structure and a Union
...ing it's undefined. On most modern machines a char is 1 byte and an int is 4 bytes, so giving x.b the value 'c' also gives the first byte of x.a that same value:
union foo x;
x.a = 3;
x.b = 'c';
printf("%i, %i\n", x.a, x.b);
prints
99, 99
Why are the two values the same? Because the last 3 byt...
Why fragments, and when to use fragments instead of activities?
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Glenn BechGlenn Bech
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Controlling maven final name of jar artifact
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answered Jan 23 '13 at 22:34
Christian VielmaChristian Vielma
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Hashing a dictionary?
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edited Jul 26 '19 at 10:04
mit
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answered May 4 '...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...;
}复制代码
你编译一下上面的代码，在VC++和GCC下都会在14行的printf处crash掉你的程序。@Laruence 说这个是个经典的坑，我觉得这怎么会是经典的坑呢？上面这代码，你一定会问，为什么if语句判断的不是f.a？而是f.a里面的数组？写...
What are the rules about using an underscore in a C++ identifier?
...d template specializations, though.)
From the 2003 C++ Standard:
17.4.3.1.2 Global names [lib.global.names]
Certain sets of names and function signatures are always reserved to the implementation:
Each name that contains a double underscore (__) or begins with an underscore follo...
How to force use of overflow menu on devices with menu button
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54
EDIT: Modified to answer for the situation of physical menu button.
This is actually prevented...