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How can I time a code segment for testing performance with Pythons timeit?
...eless, this is a canonical answer so a complete example of timeit seems in order, elaborating on Martijn's answer.
The docs for timeit offer many examples and flags worth checking out. The basic usage on the command line is:
$ python -mtimeit "all(True for _ in range(1000))"
2000 loops, best of 5: 1...
How to convert JSON to CSV format and store in a variable
... Worth noting that this escapes strings in quotes using \" which allows some fields to "pop out" of their column when viewed in Excel (which seems to prefer "" as an escape character for quotes). This can be solved by adding .replace(/\\"/g, '""') to the end of JSON.stringify(row[fieldName...
Why unsigned integer is not available in PostgreSQL?
...se PostgreSQL int4 or int8 respectively, just remembering that the natural order or arithmetic won't work reliably. But storing and retrieving is unaffected by that.
Here is how I can implement a simple unsigned int8:
First I will use
CREATE TYPE name (
INPUT = uint8_in,
OUTPUT = uint...
Get image data url in JavaScript?
...on. The images seem very similar/the same, still the Javascripted one is smaller and I'd love them to be exactly the same. One more thing: the input image is a small (594 bytes), 28x30 PNG with transparent background -- if that changes anything.
– Detariael
Ju...
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related?
... [super hitTest... to find out whose hitTest:withEvent: is called in which order.
– MHC
Feb 10 '11 at 20:01
shouldn't ...
JavaScript for…in vs for
...u use for in to loop over property names in an object, the results are not ordered. Worse: You might get unexpected results; it includes members inherited from the prototype chain and the name of methods.
Everything but the properties can be filtered out with .hasOwnProperty. This code sample does ...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part.
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Markdown and including multiple files
...
I use a includes.txt file with all my files in the right order
the I execute pandoc like this:
pandoc -s $(cat includes.txt) --quiet -f markdown -t html5 --css pandoc.css -o index.html
Works like a charm!
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How to include package data with setuptools/distribute?
...en able to come up with is to include both package_data and MANIFEST.in in order to accommodate both bdist and sdist.
– Wesley Baugh
Mar 5 '13 at 0:41
7
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Instance attribute attribute_name defined outside __init__
...ach child class may override, and in this function use function setattr in order to define the class-unique instance variables. May be this is not too aesthetic as well, but it eliminates the here-discussed linting warning.
...