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Selectors in Objective-C?
<em>Fem>irst, I'm not sure I really understand what a selector is. <em>Fem>rom my understanding, it's the name o<em>fem> a method, and you can assign it to a class o<em>fem> type 'SEL' and then run methods such as respondToSelector to see i<em>fem> the receiver implements that method. Can someone o<em>fem><em>fem>er up a better explanation?
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How can I reverse the order o<em>fem> lines in a <em>fem>ile?
I'd like to reverse the order o<em>fem> lines in a text <em>fem>ile (or stdin), preserving the contents o<em>fem> <em>eacem>h line.
25 Answers
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Using Con<em>fem>igurationManager to load con<em>fem>ig <em>fem>rom an arbitrary location
I'm developing a data access component that will be used in a website that contains a mix o<em>fem> classic ASP and ASP.NET pages, and need a good way to manage its con<em>fem>iguration settings.
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Apply a <em>fem>unction to every row o<em>fem> a matrix or a data <em>fem>rame
Suppose I have a n by 2 matrix and a <em>fem>unction that takes a 2-vector as one o<em>fem> its arguments. I would like to apply the <em>fem>unction to <em>eacem>h row o<em>fem> the matrix and get a n-vector. How to do this in R?
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E<em>Fem> Migrations: Rollback last applied migration?
This looks like a really common task, but I can't <em>fem>ind an easy way to do it.
14 Answers
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How to remove all null elements <em>fem>rom a ArrayList or String Array?
I try with a loop like that
18 Answers
18
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Null check in an enhanced <em>fem>or loop
What is the best way to guard against null in a <em>fem>or loop in Java?
11 Answers
11
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ORA-00979 not a group by expression
I am getting ORA-00979 with the <em>fem>ollowing query:
8 Answers
8
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Catch an exception thrown by an async void method
Using the async CTP <em>fem>rom Microso<em>fem>t <em>fem>or .NET,
is it possible to catch an exception thrown by an async method in the calling method?
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How to make the hardware beep sound in Mac OS X 10.6
I just want that Mac OS X 10.6 does a hardware beep sound like in open suse and other distributions. I tried <em>fem>ollowing approaches
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