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How to draw polygons on an HTML5 canvas?
...ith moveTo and lineTo (live demo):
var ctx = canvas.getContext('2d');
ctx.fillStyle = '#f00';
ctx.beginPath();
ctx.moveTo(0, 0);
ctx.lineTo(100,50);
ctx.lineTo(50, 100);
ctx.lineTo(0, 90);
ctx.closePath();
ctx.fill();
shar...
How do I modify fields inside the new PostgreSQL JSON datatype?
...onb '["a",1]' || jsonb '["b",2]' -- will yield jsonb '["a",1,"b",2]'
So, setting a simple key can be done using:
SELECT jsonb '{"a":1}' || jsonb_build_object('<key>', '<value>')
Where <key> should be string, and <value> can be whatever type to_jsonb() accepts.
For setting ...
When is each sorting algorithm used? [closed]
What are the use cases when a particular sorting algorithm is preferred over others - merge sort vs QuickSort vs heapsort vs 'intro sort', etc?
...
Looping in a spiral
A friend was in need of an algorithm that would let him loop through the elements of an NxM matrix (N and M are odd). I came up with a solution, but I wanted to see if my fellow SO'ers could come up with a better solution.
...
jQuery text() and newlines
I want to be able to say
8 Answers
8
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Difference between “\n” and Environment.NewLine
What is the difference between two, if any (with respect to .Net)?
7 Answers
7
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PHP Regex to get youtube video ID?
Can someone show me how to get the youtube id out of a url regardless of what other GET variables are in the URL.
19 Answer...
How to generate a random string of a fixed length in Go?
I want a random string of characters only (uppercase or lowercase), no numbers, in Go. What is the fastest and simplest way to do this?
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Better way of incrementing build number?
...uild number
build_number = `get_build_number`
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion ${build_number}" ProjDir/Project-Info.plist
PlistBuddy allows you to set any key in a plist file, not just the version number. You can create all the plist files you want, and include them in the resour...
How to delete/create databases in Neo4j?
... to delete all nodes and relationships of an existing graph to get a clean setup for tests, e.g., using shell commands similar to rmrel or rm ?
...