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What is HEAD in Git?
...ges to point to the new one. The current HEAD is local to each repository, and is therefore individual for each developer.
– Greg Hewgill
Feb 20 '10 at 23:04
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error: writable atomic property cannot pair a synthesized setter/getter with a user defined setter/g
...tried to compile an older Xcode project (which used to compile just fine), and now I'm seeing a lot of errors of this form:
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“continue” in cursor.forEach()
I'm building an app using meteor.js and MongoDB and I have a question about cursor.forEach().
I want to check some conditions in the beginning of each forEach iteration and then skip the element if I don't have to do the operation on it so I can save some time.
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How to show a confirm message before delete?
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brilliant answer! short,precise and works efficiently
– John
Feb 21 at 8:47
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CreateProcess error=206, The filename or extension is too long when running main() method
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There is no simple (as in a couple of clicks or a simple command) solution to this issue.
Quoting from some answers in this bug report in Eclipse.org, these are the work-arounds. Pick the one that's the least painful to you:
Reduce the classpath
Use directories instead of jar files
Us...
How to alter a column and change the default value?
I got the following error while trying to alter a column's data type and setting a new default value:
7 Answers
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How to delete all datastore in Google App Engine?
...re --> dataviewer, select all the rows for the table you want to delete and hit the delete button (you'll have to do this for all your tables).
You can do the same programmatically through the remote_api (but I never used it).
If you're talking about the development datastore, you'll just have ...
How does OpenID authentication work?
...e of already existing internet technology (URI, HTTP, SSL, Diffie-Hellman) and realizes that people are already creating identities for themselves whether it be at their blog, photostream, profile page, etc. With OpenID you can easily transform one of these existing URIs into an account which can be...
How to Resize a Bitmap in Android?
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suppose you have large resolution image say 1200x1200 and when you display this, it will be full in the imageview. If i scale it down say 75% and the screen is so that it displays scaled image also fully in imageview, what should be done for such screens?
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Rails :dependent => :destroy VS :dependent => :delete_all
...s with the callback.
The :delete_all is made directly in your application and deletes by SQL :
DELETE * FROM users where compagny_id = XXXX
With the :destroy, there is an instantiation of all of your children. So, if you can't destroy it or if each has their own :dependent, its callbacks can be ...