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Right way to reverse pandas.DataFrame?
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data.reindex(index=data.index[::-1])
or simply:
data.iloc[::-1]
will reverse your data frame, if you want to have a for loop which goes from down to up you may do:
for idx in reversed(data.index):
print(idx, data.loc[idx, 'Even'], data.loc[idx, 'Odd'])
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Log.INFO vs. Log.DEBUG [closed]
...large commercial program and keep confusing myself between what kind of information i want to log with Log.INFO and Log.DEBUG. Are there any standards or rules of thumb on what each type of log message contains?
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iOS Simulator too big [duplicate]
The iOS Simulator is too large on the screen. I saw all the settings but nothing. Please help me!
2 Answers
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Passing arrays as parameters in bash
...ction. Thus no $ is needed when given as parameters.
Note that this still works even with descTable etc being defined with local, because locals are visible to the functions they call.
The ! in ${!1} expands the arg 1 variable.
declare -a just makes the indexed array explicit, it is not strictly nec...
How to get just one file from another branch
I am using git and working on master branch. This branch has a file called app.js .
10 Answers
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Git commit with no commit message
...ingful commit message is part of good development practice and good repository stewardship. The first line of the commit message is used all over the place within git; for more, read "A Note About Git Commit Messages".
If you open Terminal.app, cd to your project directory, and git commit -am '', y...
How to convert timestamps to dates in Bash?
I need a shell command or script that converts a Unix timestamp to a date. The input can come either from the first parameter or from stdin, allowing for the following usage patterns:
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Java: Integer equals vs. ==
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The JVM is caching Integer values. Hence the comparison with == only works for numbers between -128 and 127.
Refer: #Immutable_Objects_.2F_Wrapper_Class_Caching
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Memcache Vs. Memcached [duplicate]
...er the other?
Can you also suggest the criteria used to choose between one or the other?
2 Answers
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setNeedsLayout vs. setNeedsUpdateConstraints and layoutIfNeeded vs updateConstraintsIfNeeded
...the next line of the code, because new constraints pretty much are asking for a new layout.
The rules of thumb are:
If you manipulated constraints directly, call setNeedsLayout.
If you changed some conditions (like offsets or smth) which would change constraints in your overridden updateConstrai...