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Mapping over values in a python dictionary
Given a dictionary { k1: v1, k2: v2 ... } I want to get { k1: f(v1), k2: f(v2) ... } provided I pass a function f .
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+ operator for array in PHP?
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Quoting from the PHP Manual on Language Operators
The + operator returns the right-hand ar...
$on and $broadcast in angular
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edited Jul 23 '15 at 14:11
answered Oct 18 '13 at 10:07
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git: Apply changes introduced by commit in one repo to another repo
I have a repo1 and repo2 on local machine. They are very similar, but the latter is some kind of other branch ( repo1 is not maintained anymore).
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Connect to a heroku database with pgadmin
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328
Open the "Properties" of the Heroku server in pgAdminIII and change the "Maintenance DB" value ...
Numpy how to iterate over columns of array?
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228
Just iterate over the transposed of your array:
for column in array.T:
some_function(colum...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...做性能分析了，需要面面俱到才可高效定位问题原因。
2 应用UI性能问题分析
UI可谓是一个应用的脸，所以每一款应用在开发阶段我们的交互、视觉、动画工程师都拼命的想让它变得自然大方美丽，可是现实总是不尽人意，动...
Why doesn't c++ have &&= or ||= for booleans?
...le have said here, a bool in C++ must never have a different value such as 2. When assigning that value to a bool, it will be converted to true as per the standard.
The only way to get an invalid value into a bool is by using reinterpret_cast on pointers:
int i = 2;
bool b = *reinterpret_cast<b...
How to convert an int to string in C?
...o convert your integer value to a string.
Here is an example:
int num = 321;
char snum[5];
// convert 123 to string [buf]
itoa(num, snum, 10);
// print our string
printf("%s\n", snum);
If you want to output your structure into a file there is no need to convert any value beforehand. You can ...