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What is the difference between range and xrange functions in Python 2.X?
... Python 3 replacing range with xrange is very useful. I actually told someone to use xrange instead or range and they said that it did not matter in python 3, so I google searched for more information and this answer came up :)
– Cervo
Apr 18 '12 at 14:42
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Setting WPF image source in code
...nInit();
logo.UriSource = new Uri("pack://application:,,,/AssemblyName;component/Resources/logo.png");
logo.EndInit();
...
finalImage.Source = logo;
Or shorter, by using another BitmapImage constructor:
finalImage.Source = new BitmapImage(
new Uri("pack://application:,,,/AssemblyName;componen...
Python strftime - date without leading 0?
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Very nice! Unfortunately doesn't work alone if you want to use textual representation like time.strftime('%A %B %d, %Y'), which yields (now, on English locale) Tuesday October 07, 2014.
– Pekka Klärck
Oct 7 '14 at 14:48
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How to check for null in Twig?
...riable is undefined (not set) in the twig template, it looks like NULL or none (in twig terms). I'm pretty sure this is to suppress bad access errors from occurring in the template.
Due to the lack of a "identity" in Twig (===) this is the best you can do
{% if var == null %}
stuff in here
{% ...
Difference between rake db:migrate db:reset and db:schema:load
...ns migrations for the current env that have not run yet
db:migrate:up runs one specific migration
db:migrate:down rolls back one specific migration
db:migrate:status shows current migration status
db:rollback rolls back the last migration
db:forward advances the current schema version to the next on...
Convert integer to hexadecimal and back again
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Since this has not been mentioned here: If you use a lowecase x (e.g. ToString("x4) you get a lowercase hex value (e.g. b76).
– Skalli
Feb 28 '14 at 9:17
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Generating a PNG with matplotlib when DISPLAY is undefined
...tlib chooses an x-using backend by default. I just had the same problem on one of my servers. The solution for me was to add the following code in a place that gets read before any other pylab/matplotlib/pyplot import:
import matplotlib
# Force matplotlib to not use any Xwindows backend.
matplotli...
Fragment onResume() & onPause() is not called on backstack
... the replaced fragment) and onResume (of the replacing fragment). This is done regardless of any activity...
– David Refaeli
Nov 20 '18 at 9:40
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fatal: The current branch master has no upstream branch
I'm trying to push one of my projects to github, and I keep getting this error:
22 Answers
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How do I move a file with Ruby?
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An old question, i'm surprised no one answered this simple solution. You don't need fileutils or a systemcall, just rename the file to the new location.
File.rename source_path, target_path
Happy coding
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