https://github.com/ikesyo/nsobject-tap

`tap:` method for Objective-C borrowed from Ruby.
https://github.com/ikesyo/nsobject-tap

Last synced: 8 days ago
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`tap:` method for Objective-C borrowed from Ruby.

• Host: GitHub
• URL: https://github.com/ikesyo/nsobject-tap
• Owner: ikesyo
• License: mit
• Created: 2013-04-11T01:56:27.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2014-04-28T02:39:45.000Z (over 10 years ago)
• Last Synced: 2024-12-23T21:07:33.675Z (18 days ago)
• Language: Objective-C
• Homepage:
• Size: 219 KB
• Stars: 48
• Watchers: 6
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
NSObject-Tap ![License MIT](http://img.shields.io/badge/license-MIT-green.svg) 

============

[![Version](http://img.shields.io/cocoapods/v/NSObject-Tap.svg)](http://img.shields.io/cocoapods/v/NSObject-Tap.svg)

[![Platform](https://cocoapod-badges.herokuapp.com/p/NSObject-Tap/badge.png)](https://cocoapod-badges.herokuapp.com/p/NSObject-Tap/badge.png)

`tap:` method for Objective-C borrowed from [Ruby](http://ruby-doc.org/core-2.0/Object.html#method-i-tap). It also supports `tapp` for print debugging use case from [the RubyGem](http://rubygems.org/gems/tapp).

## Setup

Let's use [CocoaPods](http://cocoapods.org/).

```ruby

# Podfile

pod 'NSObject-Tap'

```

```sh

$ pod install

```

or copy two files `NSObject+Tap.{h,m}` to your project.

Then, import the header file.

```objc

#import "NSObject+Tap.h"

```

## Examples

Initilization:

```objc

NSArray *array = [[NSMutableArray array] tap:^(NSMutableArray *x) {

    [x addObject:@1];

    [x addObject:@2];

    [x addObject:@3];

}];

```

```objc

Person *person = [[[Person alloc] init] tap:^(Person *p) {

    p.name = @"Your Name";

    p.age = 20;

    p.address = @"Kyoto, Japan";

}];

```

Shorter codes, reduce local variables:

```objc

// NSUserDefaults

// before 1

[[NSUserDefaults standardUserDefaults] setObject:@1 forKey:@"1"];

[[NSUserDefaults standardUserDefaults] setObject:@2 forKey:@"2"];

[[NSUserDefaults standardUserDefaults] setObject:@3 forKey:@"3"];

// before 2

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

[defaults setObject:@1 forKey:@"1"];

[defaults setObject:@2 forKey:@"2"];

[defaults setObject:@3 forKey:@"3"];

// after

[[NSUserDefaults standardUserDefaults] tap:^(NSUserDefaults *x) {

    [x setObject:@1 forKey:@"1"];

    [x setObject:@2 forKey:@"2"];

    [x setObject:@3 forKey:@"3"];

}];

// NSNotificationCenter

[[NSNotificationCenter defaultCenter] tap:^(id x) {

    [x addObserver:self

          selector:@selector(willEnterForeground:)

              name:UIApplicationWillEnterForegroundNotification

            object:nil];

    [x addObserver:self

          selector:@selector(didEnterBackground:)

              name:UIApplicationDidEnterBackgroundNotification

            object:nil];

}]

```

Use `tapp`:

```objc

// Outputs "Hello, world!"

NSString *helloWorld = [@"Hello, world!" tapp];

// Outputs like ""

id object = [[[NSObject alloc] init] tapp];

// Between method chains

NSArray *filtered = [[[@[ @1, @2, @3, @4, @5 ] tapp] filteredArrayUsingPredicate:evenPredicate] tapp];

```