376Variable length of accuracy of float in NSString 

float f = 1.23456;

NSLog(@"%.2f", f);
NSLog(@"%.0f", f);
NSLog(@"%.0f", f);

1.23 1 1.23456

565Stripping Characters from an NSString
564NSData to NSString and vice versa
484Printing Selectors in NSLog
452Padding with Zeros (or other characters)
447Stripping out NSLog() from the Release Build
383String By Appending Path Component
381Zero-Padding in Objective-C

305Converting float to string %4.2f

printf ("floats: %4.2f %+.0e %E \n", 3.1416, 3.1416, 3.1416); floats: 3.14 +3e+000 3.141600E+000

992Returning output of print_r in PHP
990Typing non-breaking spaces in OSX
853PHP define(): single or double quotes?
647The 11G Text-Edit Challenge
640printf()ing string in C++
632Inline Functions in C
564NSData to NSString and vice versa

33CGPointMake

CGPoint CGPointMake ( CGFloat x, CGFloat y );

x, y has to be floats, passing only integers might not work.

especially good to know, when and if ints get converted into floats.

= CGPointMake(100.0f + someIntVar, 50.0f + anotherIntVar); ≠ CGPointMake(100 + someIntVar, 50 + anotherIntVar);

this .0f seems to have a meaning after all.

564NSData to NSString and vice versa
376Variable length of accuracy of float in NSString
305Converting float to string %4.2f