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How to change the default GCC compiler in Ubuntu?
...ll g++-4.5
update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.6 100
update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.5 50
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 100
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.5 50
update-alternatives...
Initializing a two dimensional std::vector
...:
std::vector<std::vector<int>>v(10,std::vector<int>(11,100));
10 is the size of the outer or global vector, which is the main one, and 11 is the size of inner vector of type int, and initial values are initialized to 100! That's my first help on stack, i think it helps someone....
How can I center a div within another div? [duplicate]
...y: fiddle
CSS
.container {
background: yellow;
width: %100;
display: flex;
flex-direction: row;
flex-wrap: wrap;
justify-content: center;
align-items: center;
}
.centered-div {
width: 80%;
height: 190px;
mar...
TCPServer TCP服务器扩展：在Android设备上创建TCP服务器 · App Inventor 2 中文网
...能
在 Android 设备上创建 TCP 服务器
接受多个客户端连接
支持双向文本消息传输
支持多种字符编码（US-ASCII、UTF-8、ISO-8859-1、UTF-16等）
支持行分隔符配置
下载
.aix拓展文件：
de.ullisroboterseit...
Select n random rows from SQL Server table
...
SET STATISTICS TIME ON
SET STATISTICS IO ON
/* newid()
rows returned: 10000
logical reads: 3359
CPU time: 3312 ms
elapsed time = 3359 ms
*/
SELECT TOP 1 PERCENT Number
FROM Numbers
ORDER BY newid()
/* TABLESAMPLE
rows returned: 9269 (varies)
logical reads: 32
CPU time: 0 ms
...
How can I scale an image in a CSS sprite
...ion:relative; overflow:hidden; max-width:160px;}
.stretchy .spacer {width: 100%; height: auto;}
.stretchy .sprite {position:absolute; top:0; left:0; max-width:none; max-height:100%;}
.stretchy .sprite.s2 {left:-100%;}
.stretchy .sprite.s3 {left:-200%;}
HTML
<a class="stretchy" href="#">
&...
How to format numbers? [duplicate]
... I first wrote this answer, but the current status looks good.
var n = 100000;
var value = n.toLocaleString(
undefined, // leave undefined to use the browser's locale,
// or use a string like 'en-US' to override it.
{ minimumFractionDigits: 2 }
);
console.log(value);
// In en-US...
What are the differences between a multidimensional array and an array of arrays in C#?
...0.349 25.861 26.214 19.677 20.171
5.050 5.085 6.412 5.225 5.100 5.751 6.650 5.222 6.770 5.305
The first row are timings of jagged arrays, the second shows multidimensional arrays and the third, well that's how it should be. The program is shown below, FYI this was tested r...
Differences in boolean operators: & vs && and | vs ||
...the bitwise AND and bitwise OR operators.
int a = 6; // 110
int b = 4; // 100
// Bitwise AND
int c = a & b;
// 110
// & 100
// -----
// 100
// Bitwise OR
int d = a | b;
// 110
// | 100
// -----
// 110
System.out.println(c); // 4
System.out.println(d); // 6
Thanks to Carlo...
GCC -fPIC option
...e.
Pseudo-assembly:
PIC: This would work whether the code was at address 100 or 1000
100: COMPARE REG1, REG2
101: JUMP_IF_EQUAL CURRENT+10
...
111: NOP
Non-PIC: This will only work if the code is at address 100
100: COMPARE REG1, REG2
101: JUMP_IF_EQUAL 111
...
111: NOP
EDIT: In response to ...