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Purge or recreate a Ruby on Rails database
...to do this:
This will reset your database and reload your current schema with all:
rake db:reset db:migrate
This will destroy your db and then create it and then migrate your current schema:
rake db:drop db:create db:migrate
All data will be lost in both scenarios.
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Bootstrap dropdown sub menu missing
Bootstrap 3 is still at RC, but I was just trying to implement it. I couldn't figure out how to put a sub menu class. Even there is no class in css and even the new docs don't say anything about it
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Exclude .svn directories from grep [duplicate]
...irectory, the results include a lot of files from the .svn directories. Is it possible to recursively grep a directory, but exclude all results from .svn directories?
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What is the purpose of AsQueryable()?
... useful reason to represent IEnumerable as IQueryable ? For example, is it supposed to be for cases like this:
5 Answers...
On - window.location.hash - Change?
...by setting an interval that keeps checking the current hash, and comparing it against what it was before, we do this and let subscribers subscribe to a changed event that we fire if the hash changes.. its not perfect but browsers really don't support this event natively.
Update to keep this answe...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
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For your needs, use ConcurrentHashMap. It allows concurrent modification of the Map from several threads without the need to block them. Collections.synchronizedMap(map) creates a blocking Map which will degrade performance, albeit ensure consistency (if used prop...
How to handle Back button with in the dialog?
I am developing an application that when the button is pressed, it opens a dialog with OK and Cancel buttons.
8 Answers
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Using DISTINCT and COUNT together in a MySQL Query
...follow
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edited Sep 8 '14 at 10:19
user3414693
answered Jun 16 '09 at 15:47
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Copying files from one directory to another in Java
... directory to another (subdirectory) using Java. I have a directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to copy the review (which repre...
Xcode 6 - How to pick signing certificate/provisioning profile for Ad-Hoc distribution?
...solved using command line "xcodebuild" tool script, which is preinstalled with Xcode 6 (didn't need to re-install Xcode 5).
http://www.thecave.com/2014/09/16/using-xcodebuild-to-export-a-ipa-from-an-archive/
Script in terminal:
xcodebuild -exportArchive -archivePath $projectname.xcarchive -export...