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Python: try statement in a single line
...safer way (and the prevailing style) is to set all variables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do assign all the names you are interested in first, you do have options.
The best option is an if statement.
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Changing the color of the axis, ticks and labels for a plot in matplotlib
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If you have several figures or subplots that you want to modify, it can be helpful to use the matplotlib context manager to change the color, instead of changing each one individually. The context manager allows you to tempor...
From Arraylist to Array
I want to know if it is safe/advisable to convert from ArrayList to Array?
I have a text file with each line a string:
9 An...
Add querystring parameters to link_to
I'm having difficultly adding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly.
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Print Current Mercurial Revision Hash?
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In case people miss the solutions below if you want the full hash use: hg --debug id -i if you want template support use hg parent --template '{node}' Do not use hg log -l 1, its the latest repository changeset, not the current working copy changeset.
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How do I associate a Vagrant project directory with an existing VirtualBox VM?
... your "Vagrantfile" to track the UUID of your VM. This file will not exist if a VM does not exist. The format of the file is JSON. It looks like this if a single VM exists:
{
"active":{
"default":"02f8b71c-75c6-4f33-a161-0f46a0665ab6"
}
}
default is the name of the default virtual mac...
Eclipse syntax highlighting preferences save and restore
...before I got the correct syntax coloring.
Be sure to close the workspace, if it's open in Eclipse, before copying the files.
This worked with Eclipse Helios.
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Git says “Warning: Permanently added to the list of known hosts”
... issue on my ubuntu machine. It started to behave this way after I used a different (from my default ~/.ssh/id_rsa) key to connect to a server. As @JeremiahGowdy mentioned, I have debug3: load_hostkeys: loading entries for host "172.16.3.101" from file "/dev/null". Why does SSH starts using /dev/nul...
AngularJS multiple filter with custom filter function
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this one returns all the result if it doesn't find the searched attribute in the list, how can I do to invert this behavior and return no result if the value doesn't exist in the list?
– Zakaria Belghiti
Feb 6 '16 at 0...
Capitalize or change case of an NSString in Objective-C
...ps" one has to keep in mind that usually "Sentence" means "entire string". If you wish for real sentences use the second method, below, otherwise the first:
@interface NSString ()
- (NSString *)sentenceCapitalizedString; // sentence == entire string
- (NSString *)realSentenceCapitalizedString; // ...