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Difference between Destroy and Delete
... about your models callbacks then use destroy_all
From the official docs
http://apidock.com/rails/ActiveRecord/Base/destroy_all/class
destroy_all(conditions = nil) public
Destroys the records matching conditions by instantiating each record
and calling its destroy method. Each object’...
“From View Controller” disappears using UIViewControllerContextTransitioning
...iding off, or flip-horizontal). I filed a bug for iOS8 at rdar://17961976 (http://openradar.appspot.com/radar?id=5210815787433984). Also see the sample project at http://github.com/bcherry/TransitionBug
Edit 2: Thanks to graveley for the suggestion, using UIModalPresentationFullScreen fixes the iss...
Environment variable substitution in sed
If I run these commands from a script:
10 Answers
10
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MySQL Error 1093 - Can't specify target table for update in FROM clause
...e table which you use in the SELECT part.
This behaviour is documented at:
http://dev.mysql.com/doc/refman/5.6/en/update.html
Maybe you can just join the table to itself
If the logic is simple enough to re-shape the query, lose the subquery and join the table to itself, employing appropriate selec...
What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
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Add-on software packages.
See http://www.pathname.com/fhs/2.2/fhs-3.12.html for details.
Also described at Wikipedia.
Its use dates back at least to the late 1980s, when it was a standard part of System V UNIX. These days, it's also seen in Linux, Sola...
Difference between /res and /assets directories
...re is an explanation of each in the official android documentation:
from http://developer.android.com/tools/projects/index.html
assets/
This is empty. You can use it to store raw asset files. Files that you save here are compiled into an .apk file as-is, and the original filename is preserved. Y...
What does java.lang.Thread.interrupt() do?
...tus will be set.
Check this out for complete understanding about same :
http://download.oracle.com/javase/tutorial/essential/concurrency/interrupt.html
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css ellipsis on second line
...pure CSS.
My source when I was looking for the exact same thing just now: http://www.quirksmode.org/css/textoverflow.html (Quirksmode ftw!)
EDIT If the good CSS gods will implement http://www.w3.org/TR/css-overflow-3/#max-lines we can haz this in pure CSS using fragments (new) and max-lines (new)....
How do I use WebRequest to access an SSL encrypted site using https?
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This link will be of interest to you: http://msdn.microsoft.com/en-us/library/ds8bxk2a.aspx
For http connections, the WebRequest and WebResponse classes use SSL to communicate with web hosts that support SSL. The decision to use SSL is made by the WebRequest ...
Get elements by attribute when querySelectorAll is not available without using libraries?
...ents by attribute. It's now supported in all relevant browsers (even IE8): http://caniuse.com/#search=queryselector
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