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How can I use Homebrew to install both Python 2 and 3 on Mac?
I need to be able to switch back and forth between Python 2 and 3. How do I do that using Homebrew as I don't want to mess with path and get into trouble.
Right now I have 2.7 installed through Homebrew.
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Windows recursive grep command-line
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findstr can do recursive searches (/S) and supports some variant of regex syntax (/R).
C:\>findstr /?
Searches for strings in files.
FINDSTR [/B] [/E] [/L] [/R] [/S] [/I] [/X] [/V] [/N] [/M] [/O] [/P] [/F:file]
[/C:string] [/G:file] [/D:dir list] [/A...
How do I do a not equal in Django queryset filtering?
In Django model QuerySets, I see that there is a __gt and __lt for comparitive values, but is there a __ne / != / <> ( not equals ?)
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JavaScript displaying a float to 2 decimal places
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And you can always use parseFloat(float_num.toFixed(2)) to convert the string back to float while keeping only two decimals.
– Hankrecords
Feb 15 '17 at 15:07
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How to list all users in a Linux group?
How do I list all members of a group in Linux (and possibly other unices)?
20 Answers
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C# Regex for Guid
I need to parse through a string and add single quotes around each Guid value. I was thinking I could use a Regex to do this but I'm not exactly a Regex guru.
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Pandas groupby: How to get a union of strings
...065 This
1 2 0.301084 is
2 3 0.463468 a
3 4 0.643961 random
4 1 0.866521 string
5 2 0.120737 !
In [6]: df.dtypes
Out[6]:
A int64
B float64
C object
dtype: object
When you apply your own function, there is not automatic exclusions of non-numeric columns...
How do you get a string from a MemoryStream?
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This sample shows how to read and write a string to a MemoryStream.
Imports System.IO
Module Module1
Sub Main()
' We don't need to dispose any of the MemoryStream
' because it is a managed object. However, just for
' good practice, we...
In tmux can I resize a pane to an absolute value
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The -x and -y options for resize-pane were introduced in tmux 1.8.
– Chris Johnsen
Apr 23 '13 at 6:10
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Showing line numbers in IPython/Jupyter Notebooks
...er keyboard shortcuts.
In more details CTRL - M (or ESC) bring you to command mode, then pressing the L keys should toggle the visibility of current cell line numbers. In more recent notebook versions Shift-L should toggle for all cells.
If you can't remember the shortcut, bring up the command pal...