FoundationExtension


This library includes small Cocoa/UIKit extensions. This library does not includes high-level data structure, algorithm or frameworks, but collection of code snippets.

• Many common snippets in a method call.
• Looks like native foundation methods - It follows Apple Coding Guideline and Foundation naming convention.

See document on Github

How to use

• Compiled library
  1. Build project
  2. Add FoundationExtension or UIKitExtension target as dependency
• Directy source
  1. Add files what you need to your project
• CocoaPod
  1. Visit and follow http://cocoapods.org/

If your compiler is gcc or old clang, add '-force_load' to static library.

Download for editing

git clone git://github.com/youknowone/FoundationExtension.git
cd FoundationExtension
git submodule update --init

Why useful

Make your code short! Do not allow evil objc to make your code verbose. This library includes many shortcuts for common work.

NSData from URL

Foundation

NSString *URLString = [NSSring stringWithFormat:@"http://"HOST_URL"/api/%@", key];
NSURL *URL = [NSURL URLWithString:URLString];

FoundationExtension

NSURL *URL = [[@"http://"HOST_URL"/api/%@" format:key] URL];

See also

NSString(Shortcuts)

NSString(NSURL)

iPhone MAC Address

Foundation

• No way.

FoundationExtension

[[UIDevice currentDevice] MACAddress]

See also

UIDevice(Shortcuts)

performSelector, with 3 object

Foundation

• No way. You should use <objc/runtime.h>

FoundationExtension

[obj performSelector:sel withObject:o1 withObject:o2 withObject:o3];

See also

NSObject(ObjCRuntime)

Get NSData from post request

Foundation

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:@"field1=value1"];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:NULL error:NULL];

FoundationExtension

NSData *data = [NSData dataWithContentsOfURL:URL postBody:@"field1":@"value1"} encoding:NSUTF8StringEncoding];

See also

NSData(NSURLRequest)

Get NSData from Multipart Form POST

Foundation

• No way.

FoundationExtension

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
[request setHTTPMultiPartFormPostBody:@"filename":data} encoding:NSUTF8StringEncoding];
NSData *data = [NSData dataWithContentOfURLRequest:request];

See also

NSURLRequestAdditions.h

Truncate strings in array

Foundation

NSMutableArray *newArray = [NSMutableArray array];
for (NSString *s in array) {
    [newArray addObject:[s substringToIndex:20]];
}

FoundationExtension NSArray

NSArray *newArray = [array arrayByMappingOperation:^(NSString *obj){ [obj substringToIndex:20]; }];

FoundationExtension NSMutableArray

[array map::^(NSString *obj){ [obj substringToIndex:20]; }];

See also

Map/Filter/Reduce

NSAFunctional.h

Get a class name

Foundation

NSString *className = [NSString stringWithUTF8String:class_getName(obj.class)];

FoundationExtension

NSString *className = obj.class.name;

See also

NSObject(ObjCRuntime)

NSObject(ObjCRuntimeClass)

Get hexadecimal value from base 16 string

Foundation

int value;
sscanf(string.UTF8String, "%x", &value);

FoundationExtension

NSInteger value = [string hexadecimalValue];

See also

NSData(Serialization)

How about base 12 string?

Foundation

• Why should foundation has this?

FoundationExtension

NSInteger value = [string integerValueBase:12];

See also

NSString(Evaluation)

md5 hash

Foundation

unsigned char hashedChars[CC_MD5_DIGEST_LENGTH];
CC_MD5([data bytes], (CC_LONG)[self length], hashedChars);
NSMutableString *result = [[NSMutableString alloc] init];
for ( int i = 0; i<CC_MD5_DIGEST_LENGTH; i++ ) {
    [result appendFormat:@"%02x", *(hashedChars+i)];
}

FoundationExtension

NSString *result = [data digestStringByMD5];

See also

NSData(CommonCrypto)

plist dictionary decode from HTTP post request

Foundation

• Get data from NSURLRequest. Ehh.. so what can I do now? (Use NSPropertyListSerialization)

FoundationExtension

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
[request setHTTPPostBody:@"key1":@"value1"} encoding:NSUTF8StringEncoding];
NSData *data = [NSData dataWithContentOfURLRequest:request];
NSDictionary *dictionary = [NSDictionary dictionaryWithData:data];

See also

NSMutableURLRequest(HTTPMethod)

NSData(NSURLRequest)

NSDictionary(NSData)

UIColor from HTML color code

UIKitExtension

UIColor *color = [UIColor colorWithHTMLExpression:@"#f0f0f0"];

See also

UIColor(HTMLColor)

Change implementation to new one

FoundationExtension

[class methodObjectForSelector:@selector(method1)].implementation
  = [class methodObjectForSelector:@selector(method2)].implementation;
// now [obj method1] equals [obj method2]

See also

NSAMethod

Retrieve accessibility for private variable.

FoundationExtension