sekati

# xcode-build-bump.sh
# @desc Auto-increment the build number every time the project is run. 
# @usage
# 1. Select: your Target in Xcode
# 2. Select: Build Phases Tab
# 3. Select: Add Build Phase -> Add Run Script
# 4. Paste code below in to new "Run Script" section
# 5. Drag the "Run Script" below "Link Binaries With Libraries"
# 6. Insure that your starting build number is set to a whole integer and not a float (e.g. 1, not 1.0)

fadookie

//Implemented based on the pseudo-code in http://stackoverflow.com/a/9981965/350761
int randomIndex = arc4random() % [set count];
__block int currentIndex = 0;
__block id selectedObj = nil;
[set enumerateObjectsUsingBlock:^(id obj, BOOL *stop) {
    if (randomIndex == currentIndex) { selectedObj = obj; *stop = YES; }
    else currentIndex++;
}];
return selectedObj;

dropmeaword

double midi2freq(int midi)
{
  double f;

  f = exp (log (440.0) + (double)(midi - 69) * log (2.0) / 12.0);
  return (f);
}

int freq2midi(double f)
{

gleitz

var scales = {
         'natural major': [0,2,4,5,7,9,11,12],
         'ionian': [0,2,4,5,7,9,11,12],
         'major': [0,2,4,5,7,9,11,12],
         'chromatic': [0,1,2,3,4,5,6,7,8,9,10,11,12],
         'spanish 8 tone': [0,1,3,4,5,6,8,10,12],
         'flamenco': [0,1,3,4,5,7,8,10,12],
         'symmetrical': [0,1,3,4,6,7,9,10,12],
         'inverted diminished': [0,1,3,4,6,7,9,10,12],
         'diminished': [0,2,3,5,6,8,9,11,12],

mischah

#The power of z

Do you spend lots of time doing things like this?

cd this/is/the/path/that/i/want/so/i/type/it/all/out/to/get/whereiwant

With z, you could just do this:

lattejed

int fromPPQ15360TicksToSamples (int ticks, int tempo, int sampleRate)
{
    // ticks -> samples
    // 3.9025 = 60000 (milliseconds / min) / 15360 (ticks per quarter note)
    return (3.9025 * sampleRate * ticks) / (double)tempo;
}

int fromSamplesToPPQ15360Ticks (int sampleOffset, int tempo, int sampleRate)
{
    // samples -> ticks

pcperini

operator infix ~> { associativity right }
@infix func ~>(firstBlock: (() -> Void), secondBlock: (() -> Void)) -> (() -> Void) {
    return {
        dispatch_async(dispatch_get_global_queue(-32768, 0), {
            firstBlock()
            dispatch_async(dispatch_get_main_queue(), secondBlock)
        })
    }
}

Kaelten

// A simple replacement for Obj-C's @synchronized keyword, currently seems to cause compiler error if lock is an object array.

func synced(lock: AnyObject, closure: () -> ()) {
    objc_sync_enter(lock)
    closure()
    objc_sync_exit(lock)
}

keremk

// Playground - noun: a place where people can play

import UIKit

var str = "Hello, playground"

enum TimeIntervalUnit {
  case Seconds, Minutes, Hours, Days, Months, Years
  
  func dateComponents(interval: Int) -> NSDateComponents {

genedelisa

class MIDISampler : NSObject {
    var engine:AVAudioEngine!
    var playerNode:AVAudioPlayerNode!
    var mixer:AVAudioMixerNode!
    var sampler:AVAudioUnitSampler!
    /// soundbanks are either dls or sf2. see http://www.sf2midi.com/
    var soundbank:NSURL!
    let melodicBank:UInt8 = UInt8(kAUSampler_DefaultMelodicBankMSB)
    /// general midi number for marimba
    let gmMarimba:UInt8 = 12