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Is it Pythonic to use list comprehensions for just side effects?
Think about a function that I'm calling for its side effects, not return values (like printing to screen, updating GUI, printing to a file, etc.).
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How to change a nullable column to not nullable in a Rails migration?
...s:
# Make sure no null value exist
MyModel.where(date_column: nil).update_all(date_column: Time.now)
# Change the column to not allow null
change_column :my_models, :date_column, :datetime, null: false
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How to set the width of a cell in a UITableView in grouped style
...her two are worse.
Adjust table view width in -viewWillAppear:
First of all, this is unreliable, the superview or parent view controller may adjust table view frame further after -viewWillAppear: is called. Of course, you can subclass and override -setFrame: for your UITableView just like what I ...
What exactly does the “u” do? “git push -u origin master” vs “git push origin master”
...h> makes things unambiguous. If you leave off the remote or branch git falls back on the branch config settings, which are set for you with git push -u.
– dahlbyk
Apr 18 '11 at 2:12
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In C#, how to instantiate a passed generic type inside a method?
...tion to create types without a default constructor, default(T) is null for all reference types.
– Dan C.
Mar 18 '09 at 16:31
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What is the point of “final class” in Java?
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First of all, I recommend this article: Java: When to create a final class
If they do, when do they use it so I can understand it better and know when to use it.
A final class is simply a class that can't be extended.
(It doe...
How to open a second activity on click of button in android app
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but where? I get errors all over the place If i try place this withing the .java in eclipse
– Henry Aspden
Nov 2 '12 at 12:08
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How can I fill a div with an image while keeping it proportional?
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In IE9 the image is not centered vertically or horizontally with this method, it is aligned to the top and left. i59.tinypic.com/ouo77s.png
– Mike Kormendy
Oct 26 '14 at 20:05
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Render HTML to an image
... which already has a lot of answers, yet I still spent hours trying to actually do what I wanted:
given an html file, generate a (png) image with transparent background from the command line
Using Chrome headless (version 74.0.3729.157 as of this response), it is actually easy:
"/Applications/G...
Can you Run Xcode in Linux?
...l toolchain for Xcode (the gcc compiler family, the gdb debugger, etc.) is all open source and common to Unix and Linux platforms. But the IDE--the editor, project management, indexing, navigation, build system, graphical debugger, visual data modeling, SCM system, refactoring, project snapshots, e...