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ValueError: math domain error
I was just testing an example from Numerical Methods in Engineering with Python .
4 Answers
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What is the difference between join and merge in Pandas?
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I always use join on indices:
import pandas as pd
left = pd.DataFrame({'key': ['foo', 'bar'], 'val': [1, 2]}).set_index('key')
right = pd.DataFrame({'key': ['foo', 'bar'], 'val': [4, 5]}).set_index('key')
left.join(right, lsuffix=...
HTML/CSS: Make a div “invisible” to clicks?
For various reasons, I need to put a (mostly) transparent <div> over some text. However, this means that the text can't be clicked (eg, to click links or select it). Would it be possible to simply make this div "invisible" to clicks and other mouse events?
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Omitting the first line from any Linux command output
... also sed '1d'
– JoL
May 19 '17 at 0:16
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Difference between \n and \r?
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In terms of ascii code, it's 3 -- since they're 10 and 13 respectively;-).
But seriously, there are many:
in Unix and all Unix-like systems, \n is the code for end-of-line, \r means nothing special
as a consequence, in C and most languages that somehow copy it (eve...
Incrementing in C++ - When to use x++ or ++x?
I'm currently learning C++ and I've learned about the incrementation a while ago.
I know that you can use "++x" to make the incrementation before and "x++" to do it after.
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How to upgrade Git on Windows to the latest version?
I just upgraded to Git 1.8.0.1 for Windows, from my previous version 1.7.9.mysysgit.0. I downloaded the new version from the Git site and installed through the normal Git installer EXE.
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How to find the key of the largest value hash?
I have the following hash {"CA"=>2, "MI"=>1, "NY"=>1}
7 Answers
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Officially, what is typename for?
On occasion I've seen some really indecipherable error messages spit out by gcc when using templates... Specifically, I've had problems where seemingly correct declarations were causing very strange compile errors that magically went away by prefixing the typename keyword to the beginning of the...
Copy the entire contents of a directory in C#
I want to copy the entire contents of a directory from one location to another in C#.
22 Answers
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