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Twitter Bootstrap - how to center elements horizontally or vertically
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Dan Dascalescu
98.2k3636 gold badges263263 silver badges333333 bronze badges
answered Apr 22 '14 at 21:47
m0000gm000...
Difference between filter and filter_by in SQLAlchemy
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Be careful when using .filter. a query like id=12345, query(users).filter(id == id) will not filter on users.id. Instead, it will evaluate id == id as True and return all users. You need to use .filter(users.id == id) (as demoed above). I made this mistake earlier today.
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How can I remove the decimal part from JavaScript number?
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Use Math.round() function.
Math.round(65.98) // will return 66
Math.round(65.28) // will return 65
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Flatten nested dictionaries, compressing keys
...stance(dd, dict) else { prefix : dd }
Test:
In [2]: flatten_dict({'abc':123, 'hgf':{'gh':432, 'yu':433}, 'gfd':902, 'xzxzxz':{"432":{'0b0b0b':231}, "43234":1321}}, '.')
Out[2]:
{'abc': 123,
'gfd': 902,
'hgf.gh': 432,
'hgf.yu': 433,
'xzxzxz.432.0b0b0b': 231,
'xzxzxz.43234': 1321}
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How to display line numbers in 'less' (GNU)
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Luke Peterson
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answered May 6 '09 at 20:56
dirkgentlydirkgently
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How to measure time taken by a function to execute
...returns the number of microseconds in the fractional (e.g. a value of 1000.123 is 1 second and 123 microseconds).
now() is monotonically increasing. This is important as Date.getTime() can possibly jump forward or even backward on subsequent calls. Notably, if the OS's system time is updated (e.g....
Jackson - Deserialize using generic class
...ave asked the full question correctly here stackoverflow.com/questions/11659844/…
– gnjago
Jul 27 '12 at 5:49
what's...
App Inventor 2 列表代码块 · App Inventor 2 中文网
...异常、报错。
如果给定列表是一个二维列表，如 [["abc","123"],["xyz","456"]] ，则返回的列表项也是一个列表对象，如 ["abc","123"]。
求对象在列表中的位置
返回指定对象在列表中的位置，从 1 开始，如果不在列...
How can i use iptables on centos 7? [closed]
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98
RHEL and CentOS 7 use firewall-cmd instead of iptables. You should use that kind of command:
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How can I add a string to the end of each line in Vim?
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dirkgentlydirkgently
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