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How can I write text on a HTML5 canvas element?
...i", (canvas.width / 2) - 17, (canvas.height / 2) + 8);
#my-canvas {
background: #FF0;
}
<canvas id="my-canvas" width="200" height="120"></canvas>
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Convert Year/Month/Day to Day of Year in Python
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Can a variable number of arguments be passed to a function?
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Yes. You can use *args as a non-keyword argument. You will then be able to pass any number of arguments.
def manyArgs(*arg):
print "I was called with", len(arg), "arguments:", arg
>>> manyArgs(1)
I was called with 1 arguments: (1,)
>>>...
Best practice for creating millions of small temporary objects
...s. There would be two types of sweeps, a fast and a full sweep.
[GC 325407K->83000K(776768K), 0.2300771 secs]
[GC 325816K->83372K(776768K), 0.2454258 secs]
[Full GC 267628K->83769K(776768K), 1.8479984 secs]
The arrow is before and after size.
As long as it is just doing GC and not a ful...
How to break out or exit a method in Java?
The keyword break in Java can be used for breaking out of a loop or switch statement. Is there anything which can be used to break from a method?
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Check variable equality against a list of values
I'm checking a variable, say foo , for equality to a number of values. For example,
13 Answers
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Rolling or sliding window iterator?
I need a rolling window (aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for d...
What is tail recursion?
...to complete before the JavaScript interpreter begins to actually do the work of calculating the sum.
Here's a tail-recursive version of the same function:
function tailrecsum(x, running_total = 0) {
if (x === 0) {
return running_total;
} else {
return tailrecsum(x - 1, runn...
Multiple levels of 'collection.defaultdict' in Python
Thanks to some great folks on SO, I discovered the possibilities offered by collections.defaultdict , notably in readability and speed. I have put them to use with success.
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Can someone explain the traverse function in Haskell?
I am trying and failing to grok the traverse function from Data.Traversable . I am unable to see its point. Since I come from an imperative background, can someone please explain it to me in terms of an imperative loop? Pseudo-code would be much appreciated. Thanks.
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