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Why do we need tuples in Python (or any immutable data type)?
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124
immutable objects can allow substantial optimization; this is presumably why strings are also ...
How do I interpret precision and scale of a number in a database?
I have the following column specified in a database: decimal(5,2)
3 Answers
3
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Generate a heatmap in MatPlotLib using a scatter data set
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12 Answers
12
Active
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HTML: How to create a DIV with only vertical scroll-bars for long paragraphs?
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240
Use overflow-y. This property is CSS 3.
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What do (lambda) function closures capture?
...e a new scope each time you create the lambda:
>>> adders = [0,1,2,3]
>>> for i in [0,1,2,3]:
... adders[i] = (lambda b: lambda a: b + a)(i)
...
>>> adders[1](3)
4
>>> adders[2](3)
5
The scope here is created using a new function (a lambda, for brevity...
How to trace the path in a Breadth-First Search?
...aths.
# graph is in adjacent list representation
graph = {
'1': ['2', '3', '4'],
'2': ['5', '6'],
'5': ['9', '10'],
'4': ['7', '8'],
'7': ['11', '12']
}
def bfs(graph, start, end):
# maintain a queue of paths
queue = []
# push the first p...
CFBundleVersion in the Info.plist Upload Error
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210
There's at least 1 known bug in Apple's upload server that they've not fixed for more than 12 ...
Fast way to get image dimensions (not filesize)
...more the better. I emphasize fast because my images are quite big (up to 250 MB) and it takes soooo long to get the size with ImageMagick's identify because it obviously reads the images as a whole first.
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