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Empty arrays seem to equal true and false at the same time
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276
You're testing different things here.
if (arr) called on object (Array is instance of Object...
What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
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edited Jan 27 '19 at 0:16
answered Sep 29 '12 at 2:22
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How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?
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172
Try this:
$str = preg_replace_callback('/\\\\u([0-9a-fA-F]{4})/', function ($match) {
retur...
Timeout a command in bash without unnecessary delay
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23 Answers
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汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...个人电脑由1981年推出至今，其CPU发展过程为：8086→80286→80386→80486→PENTIUM →……，还有AMD、CYRIX等旁支。后面兼容前面CPU的功能，只不过多了些指令（如多能奔腾的MMX指令集）、增大了寄存器（如386的32位EAX）、增...
Why am I getting a “401 Unauthorized” error in Maven?
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Use dynamic variable names in JavaScript
...vation Object).
So if you create variables like this:
var a = 1,
b = 2,
c = 3;
In the Global scope (= NO function context), you implicitly write those variables into the Global object (= window in a browser).
Those can get accessed by using the "dot" or "bracket" notation:
var name = w...
How to use Swift @autoclosure
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270
Consider a function that takes one argument, a simple closure that takes no argument:
func f(...