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check if variable is dataframe
when my function f is called with a variable I want to check if var is a pandas dataframe:
2 Answers
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On delete cascade with doctrine2
...a simple example in order to learn how to delete a row from a parent table and automatically delete the matching rows in the child table using Doctrine2.
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Move an item inside a list?
...already in the list to the specified position, you would have to delete it and insert it at the new position:
l.insert(newindex, l.pop(oldindex))
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What is reflection and why is it useful?
What is reflection, and why is it useful?
21 Answers
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Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...iple Chrome versions, side-by-side. This answer quotes my original answer, and includes a script which does the job for you.
Quoted from: section 7 of Cross-browser testing: All major browsers on ONE machine:
Chrome: Stand-alone installers can be downloaded from File Hippo. It is also pos...
Run command on the Ansible host
Is it possible to run commands on the Ansible host?
8 Answers
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Private virtual method in C++
...ected you're implicitly trusting the writer of any derived class to understand and properly use the protected internals, just the way a friend declaration implies a deeper trust for private members.
Users who get bad behavior from violating that trust (e.g. labeled 'clueless' by not bothering to r...
@try - catch block in Objective-C
...n_throw from my breakpoints solved this. Now it's caught by the @try block and also, NSSetUncaughtExceptionHandler will handle this if a @try block is missing.
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Big O, how do you calculate/approximate it?
Most people with a degree in CS will certainly know what Big O stands for .
It helps us to measure how well an algorithm scales.
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warning about too many open figures
... interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory.
6 Answers
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