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List comprehension in Ruby
...1, 2, 3, 4, 5, 6]
new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0}
puts new_array
Prints:
6
12
18
I would probably just do it the way you did though.
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How to clear the canvas for redrawing
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const context = canvas.getContext('2d');
context.clearRect(0, 0, canvas.width, canvas.height);
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What does `someObject.new` do in Java?
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120
It's the way to instantiate a non-static inner class from outside the containing class body, as ...
What are the aspect ratios for all Android phone and tablet devices?
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║ 19.5 x 9 ║ 0.462... ║ 2.167... ║
╠══════════════════════════╬════════════════════════╬══════...
C# short/long/int literal format?
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var d = 1.0d; // double
var d0 = 1.0; // double
var d1 = 1e+3; // double
var d2 = 1e-3; // double
var f = 1.0f; // float
var m = 1.0m; // decimal
var i = 1; // int
var ui = 1U; // uint
var ul = 1UL; // ulong
var l =...
Hidden Features of JavaScript? [closed]
...function's arguments array-like object.
function sum() {
var retval = 0;
for (var i = 0, len = arguments.length; i < len; ++i) {
retval += arguments[i];
}
return retval;
}
sum(1, 2, 3) // returns 6
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Peak memory usage of a linux/unix process
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20 Answers
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Android OpenGL ES and 2D
...ave your canvas set up, you start by calling something like:
gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
After that you're ready to render a sprite.
First, you'll need to load the sprite into a texture: http://qdevarena.blogspot.com/2009/02/how-to-load-texture-in-android-opengl.html
However, this is the...
In javascript, is an empty string always false as a boolean?
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edited Jun 20 at 9:12
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answered Jan 1 '12 at 12:09
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