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What is the preferred/idiomatic way to insert into a map?
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edited Nov 26 '10 at 18:37
user229044♦
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Change Active Menu Item on Page Scroll?
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207
It's done by binding to the scroll event of the container (usually window).
Quick example:
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How to extract text from a string using sed?
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The pattern \d might not be supported by your sed. Try [0-9] or [[:digit:]] instead.
To only print the actual match (not the entire matching line), use a substitution.
sed -n 's/.*\([0-9][0-9]*G[0-9][0-9]*\).*/\1/p'
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Check if a string contains a string in C++
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Guy Avraham
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answered Feb 26 '10 at 8:24
Matthieu N.Matthieu N...
How to check if hex color is “too black”?
...Int(c, 16); // convert rrggbb to decimal
var r = (rgb >> 16) & 0xff; // extract red
var g = (rgb >> 8) & 0xff; // extract green
var b = (rgb >> 0) & 0xff; // extract blue
var luma = 0.2126 * r + 0.7152 * g + 0.0722 * b; // per ITU-R BT.709
if (luma < 40) {
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Split (explode) pandas dataframe string entry to separate rows
... for _, row in a.iterrows()]).reset_index()
Out[55]:
index 0
0 a 1
1 b 1
2 c 1
3 d 2
4 e 2
5 f 2
Then you just have to rename the columns
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impr...
一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...本，相反。
为什么我的manifest明明指明
name="Microsoft.VC80.DebugCRT" version="8.0.50608.0"，
但是用depends.exe工具却发现引用的是8.00.50727.42呢？
因为在C:/WINDOWS/WinSxS/Policies下，有publisher configuration file也叫policy文件,如8.0.50727.42.policy文件...
C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ND sab[2]; /*用于定义数组的维数和下标的起始值*/
sab[0].cElements = 2;
sab[0].lLbound = 0;
sab[1].cElements = 2;
sab[1].lLbound = 0;
/*创建一个2*2的类型为long的二维数组*/
SAFEARRAY* psa = SafeArrayCreate(vt, sizeof(sab)/sizeof(SAF...
C++ performance challenge: integer to std::string conversion
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#include <string>
const char digit_pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"80818283848586...
How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
...conds with'%Q tho.
– Mini John
Feb 10 '15 at 2:13
3
To follow up on @TheMiniJohn's answer. It loo...