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Completion block for popViewController
...t offer any options for this. However by using the CoreAnimation framework it's possible to add a completion block to the underlying animation:
[CATransaction begin];
[CATransaction setCompletionBlock:^{
// handle completion here
}];
[self.navigationController popViewControllerAnimated:YES];
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What should every programmer know about security? [closed]
I am an IT student and I am now in the 3rd year in university. Until now we've been studing a lot of subjects related to computers in general (programming, algorithms, computer architecture, maths, etc).
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Debugging JavaScript in IE7
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edited Jan 20 '14 at 10:16
Simon
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Why does dividing two int not yield the right value when assigned to double?
...le version, which returns a double, at least one of the ints must be explicitly casted to a double.
c = a/(double)b;
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Why am I not getting a java.util.ConcurrentModificationException in this example?
Note: I am aware of the Iterator#remove() method.
10 Answers
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Pointer to pointer clarification
...ntains is a memory address. The & is the "address of" operator - i.e. it returns the address in memory of an object. The * operator gives you the object a pointer refers to, i.e. given a pointer containing an address, it returns the object at that memory address. So when you do *ipp = ip2, wh...
What is a “symbol” in Julia?
... to use Julia's DataFrames package, specifically the readtable() function with the names option, but that requires a vector of symbols.
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SQLite add Primary Key
I created a table in Sqlite by using the CREATE TABLE AS syntax to create a table based on a SELECT statement. Now this table has no primary key but I would like to add one.
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How do I set environment variables from Java?
...her modify the current process's environment and let the subprocesses inherit it.
19 Answers
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Writing to an Excel spreadsheet
I am new to Python. I need to write some data from my program to a spreadsheet. I've searched online and there seem to be many packages available (xlwt, XlsXcessive, openpyxl). Others suggest to write to a .csv file (never used CSV and don't really understand what it is).
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