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Is there a shortcut to make a block comment in Xcode?
I'm writing ANSI-compatible C code, and hence I can't use the line ( // ) comment. I'm using Xcode. In Sublime Text and Eclipse, and I think most other IDEs, there are separate keyboard shortcuts for line comments and block comments ( /**/ ). However, I don't see that in Xcode - in fact, I don't eve...
MySQL Cannot drop index needed in a foreign key constraint
... to add a column. Consequently I also want to update the UNIQUE field to encompass that new column. I'm trying to remove the current index but keep getting the error MySQL Cannot drop index needed in a foreign key constraint
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Android draw a Horizontal line between views
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Shell equality operators (=, ==, -eq)
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It's the other way around: = and == are for string comparisons, -eq is for numeric ones. -eq is in the same family as -lt, -le, -gt, -ge, and -ne, if that helps you remember which is which.
== is a bash-ism, by the way. It's better to use the POSIX =. In bash the two are equ...
Jquery live() vs delegate() [duplicate]
... #containerElement. You can do the same thing with live, but the syntax becomes increasingly horrid.
Specifying a context for your events to be captured also improves performance. With the live example, every single click on the entire document has to be compared with the selector a.myClass to se...
Scala: List[Future] to Future[List] disregarding failed futures
... The list I'm given usually has around 10-20 futures in it, and it's not uncommon for one of those futures to fail (they are making external web service requests). Instead of having to retry all of them in the event that one of them fails, I'd like to be able to get at the ones that succeeded and re...
How to compare UIColors?
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By the way: Be careful when comparing colors this way, because they have to be in the same color model to be considered equal. For instance, #ffffff does not equal [UIColor whiteColor].
– zoul
Oct 19 '09 at 16:41
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How to delete a file via PHP?
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I wonder how w3shools is doing this? w3schools.com/php/func_filesystem_delete.asp
– Fr0zenFyr
Aug 28 '15 at 19:35
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Is it wrong to place the tag after the tag?
... cope with it if you really want to write your code that way. I'd still recommend writing your code to validate, however.
– Andy E
May 2 '13 at 10:18
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How do I pass a class as a parameter in Java?
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