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if/else in a list comprehension
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Here is another illustrative example:
>>> print(", ".join(["ha" if i else "Ha" for i in range(3)]) + "!")
Ha, ha, ha!
It exploits the fact that if i evaluates to False for 0 and to True for all other values generated by the function range(). Therefore t...
Missing file warnings showing up after upgrade to Xcode 4
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In Xcode5 & Xcode6, below steps worked for me
Xcode -> Preferences -> Source Control -> uncheck Enable Source Control
then
Xcode -> Preferences -> Source Control -> check Enable Source Control
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Pretty-Print JSON Data to a File using Python
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You can use json module of python to pretty print.
>>> import json
>>> print json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4)
{
"4": 5,
"6": 7
}
So, in your case
>>> print json.dumps(json_output, indent=4)
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git replacing LF with CRLF
... V
/ \ / \ / \
crlf->lf lf->crlf crlf->lf \ / \
/ \ / \ / \
Here crlf = win-style end-of-line marker, lf = unix-style (and mac osx).
(pre-os...
Find TODO tags in Eclipse
...you should use the search function (Ctrl-F for ones in this file Search-->java-->search string for the ability to specify this workspace, that file, this project, etc.)
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UIImageView aspect fit and center
...ew.contentMode = UIViewContentModeCenter;
if (imageView.bounds.size.width > ((UIImage*)imagesArray[i]).size.width && imageView.bounds.size.height > ((UIImage*)imagesArray[i]).size.height) {
imageView.contentMode = UIViewContentModeScaleAspectFit;
}
solved my problem
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How can I map True/False to 1/0 in a Pandas DataFrame?
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True is 1 in Python, and likewise False is 0*:
>>> True == 1
True
>>> False == 0
True
You should be able to perform any operations you want on them by just treating them as though they were numbers, as they are numbers:
>>> issubclass(bool, in...
WHERE vs HAVING
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Try the following 2 queries:
SELECT `value` v FROM `table` WHERE `value`>5; -- Get 5 rows
SELECT `value` v FROM `table` HAVING `value`>5; -- Get 5 rows
You will get exactly the same results, you can see the HAVING clause can work without GROUP BY clause.
Here's the difference:
SELECT `...
Flattening a shallow list in Python [duplicate]
... don't need an indexable sequence, consider itertools.chain and company.
>>> list_of_menuitems = [['image00', 'image01'], ['image10'], []]
>>> import itertools
>>> chain = itertools.chain(*list_of_menuitems)
>>> print(list(chain))
['image00', 'image01', 'image10'...
One-line list comprehension: if-else variants
... solution, hope some one may like it :
Using: [False, True][Expression]
>>> map(lambda x: [x*100, x][x % 2 != 0], range(1,10))
[1, 200, 3, 400, 5, 600, 7, 800, 9]
>>>
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