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jQuery map vs. each
...ion you can potentially waste a lot of memory.
For example:
var items = [1,2,3,4];
$.each(items, function() {
alert('this is ' + this);
});
var newItems = $.map(items, function(i) {
return i + 1;
});
// newItems is [2,3,4,5]
You can also use the map function to remove an item from an array...
Passing parameters to JavaScript files
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14 Answers
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How to use Active Support core extensions
I have Active Support 3.0.3 installed and Rails 3.0.3 with Ruby 1.8.7.
5 Answers
5
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How do you match only valid roman numerals with a regular expression?
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16 Answers
16
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How to create custom easing function with Core Animation?
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// this should be a function that takes a time value between
// 0.0 and 1.0 (where 0.0 is the beginning of the animation
// and 1.0 is the end) and returns a scale factor where 0.0
// would produce the starting value and 1.0 would produce the
// ending value
typedef double (^KeyframeParametric...
Best way to merge two maps and sum the values of same key?
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15 Answers
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C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...八门，太多了，这里对常用的几种做一个总结，附demo。1、Markup 下载：
特点：C++编写的，一个.h，一个.cpp，绿色小巧，直接加入工程源码编译，只支持MFC。
<?xml version="1.0" encoding="utf-8"?>
<root>
<update ver="1.2.0" pkg="setup.exe" force...
use Winmerge inside of Git to file diff
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113
Update June 2015, 6 years later:
As detailed in "git mergetool winmerge", a simple git config...
Insert space before capital letters
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170
You can just add a space before every uppercase character and trim off the leading and trailin...
Cleaning `Inf` values from an R dataframe
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121
Option 1
Use the fact that a data.frame is a list of columns, then use do.call to recreate a ...