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How can I resolve “Error: No developer directory found at /Developer”?
... distributing it as an app, downloadable from the App Store. Consequently, all tools are installed in the Applications/Xcode.app package.
– Sudhir Jonathan
Apr 9 '12 at 10:53
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UIView's frame, bounds, center, origin, when to use what?
...ew has the properties frame , bounds , center , and origin , and they all seem to be interrelated. Most of the time, I deal with frame when setting the position and size of a UIView . I understand that frame is using global coordinate system and bounds is using coordinate of the local ...
How to manually install an artifact in Maven 2?
I've encountered some errors when I tried to install an artifact manually with Maven 2. I wanted to install a jar from a local directory with the command
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Difference between validate(), revalidate() and invalidate() in Swing GUI
...ater.
validate() performs relayout. It means invalid content is asked for all the sizes and all the subcomponents' sizes are set to proper values by LayoutManager.
revalidate() is just sum of both. It marks the container as invalid and performs layout of the container.
UPDATE:
Some code from Com...
How to rollback just one step using rake db:migrate
...Guide for running migrations.
Here's some more:
rake db:migrate - Run all migrations that haven't been run already
rake db:migrate VERSION=20080906120000 - Run all necessary migrations (up or down) to get to the given version
rake db:migrate RAILS_ENV=test - Run migrations in the given environm...
Embedding unmanaged dll into a managed C# dll
I have a managed C# dll that uses an unmanaged C++ dll using DLLImport. All is working great.
However, I want to embed that unmanaged DLL inside my managed DLL as explain by Microsoft there:
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What is a unix command for deleting the first N characters of a line?
... do you have any idea of why the pipe doesn't work? when i run essentially that command, 'cut' doesn't print the results to stdout ... if i just run 'tail -f logfile | cut -c 5-' i can see the results ... the problem must be with grep i'm using cygwin FYI thanks
– les2
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Python try…except comma vs 'as' in except
...s not required, since you don't have to specify it if you don't need it at all.
– mercator
Apr 13 '15 at 13:20
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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
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User.select(:first,:email).group(:first,:email).having("count(*) > 1").all
(note: not tested, you may need to tweak it)
EDITED to remove id column
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How to git clone a specific tag
...need the state at that one revision, you probably want to skip downloading all the history up to that revision.
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