soffes

Objective-C Coding Convention and Best Practices

Most of these guidelines are to match Apple's documentation and community-accepted best practices. Some are derived some personal preference. This document aims to set a standard way of doing things so everyone can do things the same way. If there is something you are not particularly fond of, it is encouraged to do it anyway to be consistent with everyone else.

This document is mainly targeted toward iOS development, but definitely applies to Mac as well.

Operators

NSString *foo = @"bar";

bobes

#!/usr/bin/env ruby

# 1. export your RIL bookmarks
# 2. save this file to the same directory where your ril_export.html is
# 3. change username and password in the script bellow
# 4. run 'ruby ril_to_instapaper.rb' in terminal

require "cgi"
require "net/http"
require "net/https"

boctor

//
//  BaseViewController.m
//
//  Created by Peter Boctor on 5/4/11.
//
//  Copyright (c) 2011 Peter Boctor
// 
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights

avalanche123

:+1:
:-1:
:airplane:
:art:
:bear:
:beer:
:bike:
:bomb:
:book:
:bulb:

steipete

// this is implemented, but not declared. we add the category to fix the warning
// (since super cannot be casted any longer in clang)
@interface UINavigationController(AMInternal)
- (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item;
@end

@implementation AMNavigationController

///////////////////////////////////////////////////////////////////////////////////////////////////

alex-cellcity

/*
 *  System Versioning Preprocessor Macros
 */ 

#define SYSTEM_VERSION_EQUAL_TO(v)                  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v)              ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v)                 ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

darkseed

UILabel *myLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 9999)];
myLabel.lineBreakMode = UILineBreakModeWordWrap;
myLabel.numberOfLines = 0;
myLabel.text = @"Some \n dynamic \n multiline \n text";
[myLabel sizeToFit]; // This shrinks the 9999 down to the size of the text
NSLog(@"Actual height is: %f", myLabel.frame.size.height); // Use this for spacing any further elements
[self.view addSubview:title]; // Or add it to a scroll view, or whatever...
[myLabel release];

dhoerl

/*
     File: KeychainItemWrapper.h
 Abstract: 
 Objective-C wrapper for accessing a single keychain item.
 
  Version: 1.2 - ARCified
 
 Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
 Inc. ("Apple") in consideration of your agreement to the following
 terms, and your use, installation, modification or redistribution of

steipete

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    selected_ = selected;

    if (animated) {
        CATransition *transition = [CATransition animation];
        transition.duration = 0.25f;
        transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        transition.type = kCATransitionFade;
        [self.selectionImageView.layer addAnimation:transition forKey:nil];
    }

mikeyk

@implementation NSNotification (KeyboardHeight)

- (CGFloat)keyboardHeight {
    CGRect bounds;
    NSValue *boundsValue = [self.userInfo objectForKey:UIKeyboardBoundsUserInfoKey];
    if (boundsValue) {
        [boundsValue getValue:&bounds];
        return bounds.size.height;
    } else {
        return 0;