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How to make unicode string with python3
...equivalent to str in Python3, so you can also write:
str(text, 'utf-8')
if you prefer.
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Func with out parameter
...o pass ref and out arguments. Of course, you can declare your own delegate if you want:
delegate V MyDelegate<T,U,V>(T input, out U output);
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Accessing a Dictionary.Keys Key through a numeric index
...t.Count -1);
You should not depend on the order of keys in a Dictionary. If you need ordering, you should use an OrderedDictionary, as suggested in this answer. The other answers on this page are interesting as well.
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grep a file, but show several surrounding lines?
... for the number of lines after the match.
grep -B 3 -A 2 foo README.txt
If you want the same number of lines before and after you can use -C num.
grep -C 3 foo README.txt
This will show 3 lines before and 3 lines after.
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How to trigger the window resize event in JavaScript?
...prefer to call the function rather than dispatch an event. This works well if you have control over the code you want to run, but see below for cases where you don't own the code.
window.onresize = doALoadOfStuff;
function doALoadOfStuff() {
//do a load of stuff
}
In this example, you can call...
How can I write text on a HTML5 canvas element?
...="myCanvas" width="300" height="150"></canvas>
Script (with few different options):
<script>
var canvas = document.getElementById('myCanvas');
var ctx = canvas.getContext('2d');
ctx.font = 'italic 18px Arial';
ctx.textAlign = 'center';
ctx. textBaseline = 'middle'...
What is %2C in a URL?
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If you write encodeURIComponent(",") in your JavaScript console, then you will also get %2C. And with decodeURIComponent("%2C") you will get back the ,.
– Benny Neugebauer
Jun 17 '15 at ...
ReactJS render string with non-breaking spaces
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If you want to display a pretty xml:
var str = "<test>\n\t\t<value>1</value>\n</test>\n".replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\t/g, "\u00a0").replace(/\n/g, '<br/>...
Make outer div be automatically the same height as its floating content
...xpand to include floated children. Be warned with using the first example, if you have any children elements outside the parent element, they will be hidden. You can also use 'auto' as the property value, but this will invoke scrollbars if any element appears outside.
You can also try floating the ...
数据结构与本地数据库 03：增删改与 TinyDB 恢复 · App Inventor 2 中文网
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procedure 刷新() {
显示 = []
var 标题 = []
foreach 项 in 卡片 {
if 关键词 = "" or textContains(lower(join(dictget(项,"question",""), " ", dictget(项,"category",""))), lower(关键词)) {
listadd(显示, 项)
listadd(标题, join("#", dictget(项,"id",0), " · ", dictget(项,"category...