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Draw on HTML5 Canvas using a mouse
I want to draw on a HTML Canvas using a mouse (for example, draw a signature, draw a name, ...)
13 Answers
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Rolling median algorithm in C
...lues, then perform a binary search to insert the new value and remove the existing one at each iteration.
12 Answers
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C# LINQ find duplicates in List
...lement in the group. In LINQ, this translates to:
var query = lst.GroupBy(x => x)
.Where(g => g.Count() > 1)
.Select(y => y.Key)
.ToList();
If you want to know how many times the elements are repeated, you can use:
var query = lst.GroupBy(x =...
What's the correct way to sort Python `import x` and `from x import y` statements?
...stack.org/developer/hacking/
http://developer.plone.org/reference_manuals/external/plone.api/contribute/conventions.html#grouping-and-sorting
PS: the isort utility automatically sorts your imports.
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How does this giant regex work?
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This is not entirely a regular expression. The regex is /.*/, which basically means "match everything". The /e Modifier however eval()'s the code in the next parameter. In fact this is a way for someone to hide code. The following proof that this is ...
Code Golf: Lasers
...t; 160 chars.
Solution had 166 strokes when this contest ended, but A. Rex has found a couple ways to shave off 6 more characters:
s!.!$t{$s++}=$&!ge,$s=$r+=99for<>;%d='>.^1<2v3'=~/./g;($r)=grep$d|=$d{$t{$_}},%t;
{$_=$t{$r+=(1,-99,-1,99)[$d^=3*/\\/+m</>]};/[\/\\ ]/&&...
How to determine whether an object has a given property in JavaScript
How can I determine whether an object x has a defined property y , regardless of the value of x.y ?
7 Answers
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Is there a better alternative than this to 'switch on type'?
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How can I remove the decimal part from JavaScript number?
...n the meantime.
Another method of truncating the fractional portion with excellent platform support is by using a bitwise operator (.e.g |0). The side-effect of using a bitwise operator on a number is it will treat its operand as a signed 32bit integer, therefore removing the fractional component. ...
python capitalize first letter only
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@Jan-PhilipGehrcke that is an exercise for the reader. You can see in that case, s is never empty, it is always '123sa' :D
– Ali Afshar
Sep 13 '12 at 16:02
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