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How to convert NSNumber to NSString
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@JonLOo when using this for specific number the decimal values loose exact values. For Eg : NSNumber *num = [NSNumber numberWithDouble:48.3]; NSString *strNumber = num.stringValue; gives results as 48.299999; this becomes critical if its A...
Markdown `native` text alignment
... known this isn't markdown, but <p align="center"> worked for me, so if anyone figures out the markdown syntax instead I'll be happy to use that. Until then I'll use the HTML tag.
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How to set UICollectionViewDelegateFlowLayout?
...ller maintains a reference to a UICollectionView. The controller should modify the built-in flow layout using the UICollectionViewDelegateFlowLayout.
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Why doesn't println! work in Rust unit tests?
...t test ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured
If tests fail, however, their stdout will be printed regardless if this option is present or not.
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Persistence unit as RESOURCE_LOCAL or JTA?
... downside is that the transaction is local to the JPA persistence unit, so if you want a transaction that spans multiple persistence units (or other databases), then RESOURCE_LOCAL may not be good enough.
JTA is also used for managing transactions across systems like JMS and JCA, but that's fairly ...
Passing an enum value as command parameter from XAML
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If I have an enum called "MyEnum" in this namespace my.namespace, how to define "local"?
– Vering
May 15 at 13:04
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PHP foreach loop key value
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What, if you echo $key? Nah. Not if you run it on the array that Philadelphia is a key of. Can you show some code?
– Pekka
Dec 2 '09 at 18:17
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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
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Since С99 the matching between format specifiers and floating-point argument types in C is consistent between printf and scanf. It is
%f for float
%lf for double
%Lf for long double
It just so happens that when arguments of type float are passed as variadic para...
Recursion or Iteration?
Is there a performance hit if we use a loop instead of recursion or vice versa in algorithms where both can serve the same purpose? Eg: Check if the given string is a palindrome.
I have seen many programmers using recursion as a means to show off when a simple iteration algorithm can fit the bill.
D...
Python append() vs. + operator on lists, why do these give different results?
Why do these two operations ( append() resp. + ) give different results?
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