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Remove Item from ArrayList
...hen 3, then 1. This will remove the elements from the list without undesirable side effects.
for (int j = i.length-1; j >= 0; j--) {
list.remove(i[j]);
}
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How to display an unordered list in two columns?
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Modern Browsers
leverage the css3 columns module to support what you are looking for.
http://www.w3schools.com/cssref/css3_pr_columns.asp
CSS:
ul {
columns: 2;
-webkit-columns: 2;
-moz-columns: 2;
}
http://jsfiddle.net/H...
How can you encode a string to Base64 in JavaScript?
I have a PHP script that can encode a PNG image to a Base64 string.
26 Answers
26
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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...dictionaries, merged (i.e. taking the union). The update() method would be what I need, if it returned its result instead of modifying a dictionary in-place.
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Convert RGBA PNG to RGB with PIL
...transparent PNG image uploaded with Django to a JPG file. The output looks broken.
7 Answers
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Immutable vs Mutable types
I'm confused on what an immutable type is. I know the float object is considered to be immutable, with this type of example from my book:
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Sort a text file by line length including spaces
...-n -s | cut -d" " -f2-
Or, to do your original (perhaps unintentional) sub-sorting of any equal-length lines:
cat testfile | awk '{ print length, $0 }' | sort -n | cut -d" " -f2-
In both cases, we have solved your stated problem by moving away from awk for your final cut.
Lines of matching len...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...后，你会发现解释器居然不到200k，这是多么地变态啊（/bin/sh都要1M，MacOS平台），而且能和C语言非常好的互动。我很好奇得浏览了一下Lua解释器的源码，这可能是我看过最干净的C的源码了。我不想写一篇大而全的语言手册，一...
How do you convert an entire directory with ffmpeg?
... convert an entire directory/folder with ffmpeg via command line or with a batch script?
24 Answers
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Draw in Canvas by finger, Android
I need to build a project for drawing on canvas by fingers,
6 Answers
6
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