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What is the benefit of zerofill in MySQL?
... y INT(8) NOT NULL);
INSERT INTO yourtable (x,y) VALUES
(1, 1),
(12, 12),
(123, 123),
(123456789, 123456789);
SELECT x, y FROM yourtable;
Result:
x y
00000001 1
00000012 12
00000123 123
123456789 123456789
...
What's the fastest way to loop through an array in JavaScript?
...
Nope. jsbench.github.io/#67b13d4e78cdd0d7a7346410d5becf12 shows that the fastest is "Reverse loop, implicit comparison, inlined code" (105,221 ops/sec) while "Loop, cached value, inlined code" scored only 76,635 ops/sec (Chrome 38.0.2125.111)
–...
7个App Inventor 2文件操作实用技巧，读写文件从未如此顺手 - App应用开发 ...
...录剩余空间——FileTools 拓展就是你的瑞士军刀。
从 fun123.cn 下载 com.sunny.FileTools.aix 拓展文件，导入后即可使用。几个特别实用的方法：
• GetFreeSpace：查询目录可用空间（字节），存大文件前先判一判，防写入失败
• AsyncCo...
What does the PHP error message “Notice: Use of undefined constant” mean?
...example, this is OK, since underscores are allowed in variable names:
if (123 === $my_var) {
do_something();
}
But this isn't:
if (123 === $my-var) {
do_something();
}
It'll be interpreted the same as this:
if (123 === $my - var) { // variable $my minus constant 'var'
do_something();
}...
Why are unsigned int's not CLS compliant?
...emented now in VB8).
To quote:
http://msdn.microsoft.com/en-us/library/12a7a7h3.aspx
The CLS was designed to be large enough to include the language
constructs that are commonly needed by developers, yet small enough
that most languages are able to support it. In addition, any language
construct th...
partial string formatting
...n't 100% control. Imagine: "{foo} {{bar}}".format(foo="{bar}").format(bar="123") from the other examples. I would expect "{bar} 123" but they output "123 123".
– Benjamin Manns
Sep 21 '18 at 13:53
...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
...tact.html
RewriteRule ^about$ about.php
Numeric identifiers /object/123
Introducing shortcuts like http://example.com/article/531 to existing PHP scripts is also easy. The numeric placeholder can just be remapped to a $_GET parameter:
RewriteRule ^article/(\d+)$ article-show.php?id=$1
...
How does this milw0rm heap spraying exploit work?
...6E outsb
0000005E DC8EA20726B4 fmul qword [esi+0xb42607a2]
00000064 04D4 add al,0xd4
00000066 D084ECBA978221 rol byte [esp+ebp*8+0x218297ba],1
0000006D 7CE8 jl 0x57
0000006F C0CA8C ror dl,0x8c
00000072 F4 hlt
00000073 ...
Validate that a string is a positive integer
...ue);
},
false
);
test("1", true);
test("1.23", false);
test("1234567890123", true);
test("1234567890123.1", false);
test("0123", false); // false because we don't handle leading 0s
test(" 123 ", false); // false because we don't handle whitespace
<label>
String:
<inp...
Getting parts of a URL (Regex)
...ex:
var a = document.createElement('a');
a.href = 'http://www.example.com:123/foo/bar.html?fox=trot#foo';
['href','protocol','host','hostname','port','pathname','search','hash'].forEach(function(k) {
console.log(k+':', a[k]);
});
/*//Output:
href: http://www.example.com:123/foo/bar.html?fox=t...