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Installing PIL with pip

...oned. Use Pillow instead, as PIL is basically dead. Pillow is a maintained fork of PIL. https://pypi.python.org/pypi/Pillow/2.2.1 pip install Pillow If you have both Pythons installed and want to install this for Python3: python3 -m pip install Pillow ...
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How to count the number of files in a directory using Python

...other entity), use os.path.isfile(): import os, os.path # simple version for working with CWD print len([name for name in os.listdir('.') if os.path.isfile(name)]) # path joining version for other paths DIR = '/tmp' print len([name for name in os.listdir(DIR) if os.path.isfile(os.path.join(DIR, n...
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What's the difference between Git Revert, Checkout and Reset?

... git revert , checkout , and reset . Why are there 3 different commands for seemingly the same purpose, and when should someone choose one over the other? ...
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Create directory if it does not exist

... Try the -Force parameter: New-Item -ItemType Directory -Force -Path C:\Path\That\May\Or\May\Not\Exist You can use Test-Path -PathType Container to check first. See the New-Item MSDN help article for more details. ...
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Deleting Objects in JavaScript

...m all turn null would mean having extra work when deleting or extra memory for each object.) Since Javascript is garbage collected, you don't need to delete objects themselves - they will be removed when there is no way to refer to them anymore. It can be useful to delete references to an object ...
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iOS 7: UITableView shows under status bar

...bar so there's a lot of text collisions. I've adjusted both the properties for Under top bars and Adjust scroll view insets which do actually stop it from scrolling under, but at the cost of keeping the top of the table view under. I've attempted to set the UITableView frame to offset by 20 pi...
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Rails 3.1: Engine vs. Mountable App

...g in parent_app/config/routes.rb. Specifying the gem in Gemfile is enough for the parent app to inherit the models, routes etc. The engine routes are specified as: # my_engine/config/routes.rb Rails.application.routes.draw do # whatever end No namespacing of models, controllers, etc. Th...
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Can I inject a service into a directive in AngularJS?

...not actually refer to $location inside the function, AngularJS will not perform the injection. The only time you'd ever notice this behavior is inside the debugger. – Walter Stabosz Apr 14 '13 at 16:17 ...
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What is a callback function?

...ter name would be a "call after" function. This construct is very useful for asynchronous behaviour where we want an activity to take place whenever a previous event completes. Pseudocode: // A function which accepts another function as an argument // (and will automatically invoke that function...
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Escape regex special characters in a Python string

...n the search pattern, include \ as well as the character(s) you're looking for. You're going to be using \ to escape your characters, so you need to escape that as well. Put parentheses around the search pattern, e.g. ([\"]), so that the substitution pattern can use the found character when it adds ...