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I have two numbers, and need to get returned the lower one. Is there any function I could use? Sure it's a easy task, I could do an if-statement. I just want to know.
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^blockName: Always remember that the block name is preceded by the ^ symbol. The block name can be any string you like, just like you name any other variable or method. Remember that both the ^ and the block name are enclosed in parentheses ().
Blocks are a language-level feature added to C, Objective-C and C++, which allow you to create distinct segments of code that can be passed around to methods or functions as if they were values. Blocks are Objective-C objects, which means they can be added to collections like NSArray or NSDictionary .
If you're using ints, use the MIN() macro:
MIN(25, 50); //Returns 25
If you're comparing two NSNumbers, then use the compare: method:
NSNumber *number, *secondNumber; //Assume 'number'=25, 'secondNumber'=50
NSComparisonResult result = [number compare:secondNumber];
return (result==NSOrderedDescending)?secondNumber:number; //Returns the 'number' NSNumber
The C standard library includes several min() functions that, given two numbers, will return the lower of the two:
double fmin(double x, double y);
long double fminl(long double x, long double y);
float fminf(float x, float y);
To use these, just #include <math.h>.
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