https://github.com/robb/Underscore.m

A DSL for Data Manipulation
https://github.com/robb/Underscore.m

Last synced: 3 months ago
JSON representation

A DSL for Data Manipulation

• Host: GitHub
• URL: https://github.com/robb/Underscore.m
• Owner: robb
• License: mit
• Archived: true
• Created: 2012-04-29T20:01:23.000Z (over 12 years ago)
• Default Branch: development
• Last Pushed: 2017-11-11T11:00:30.000Z (almost 7 years ago)
• Last Synced: 2024-05-17T05:43:05.939Z (6 months ago)
• Language: Objective-C
• Homepage: https://robb.github.io/Underscore.m/
• Size: 400 KB
• Stars: 1,467
• Watchers: 49
• Forks: 105
• Open Issues: 13
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-ios - Underscore.m - A DSL for Data Manipulation. (Utility / Web View)
• awesome-ios-star - Underscore.m - A DSL for Data Manipulation. (Utility / Web View)

README

        
# Underscore.m

## About Underscore.m

Underscore.m is a small utility library to facilitate working with common data structures in Objective-C.  

It tries to encourage chaining by eschewing the square bracket]]]]]].  

It is inspired by the awesome [underscore.js][js].

[js]: http://documentcloud.github.com/underscore

## Real world example

```objective-c

// First, let's compose a twitter search request

NSURL *twitterSearch = [NSURL URLWithString:@"http://search.twitter.com/search.json?q=@SoundCloud&rpp=100"];

// ... then we fetch us some json ...

NSData *data = [NSData dataWithContentsOfURL:twitterSearch];

// ... and parse it.

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data

                                                     options:kNilOptions

                                                       error:NULL];

// This is where the fun starts!

NSArray *tweets = [json valueForKey:@"results"];

NSArray *processed = _array(tweets)

    // Let's make sure that we only operate on NSDictionaries, you never

    // know with these APIs ;-)

    .filter(Underscore.isDictionary)

    // Remove all tweets that are in English

    .reject(^BOOL (NSDictionary *tweet) {

        return [[tweet valueForKey:@"iso_language_code"] isEqualToString:@"en"];

    })

    // Create a simple string representation for every tweet

    .map(^NSString *(NSDictionary *tweet) {

        NSString *name = [tweet valueForKey:@"from_user_name"];

        NSString *text = [tweet valueForKey:@"text"];

        return [NSString stringWithFormat:@"%@: %@", name, text];

    })

    .unwrap;

```

## Documentation

Documentation for Underscore.m can be found on [the website](https://robb.github.io/Underscore.m/).