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// https://twitter.com/dwineman/status/601853359839006721
// Default arguments are expressions, not constants, evaluated only when necessary. 

extension UIImage {
    static func emptyImage(size: CGSize, scale: CGFloat = UIScreen.mainScreen().scale) -> UIImage {
        UIGraphicsBeginImageContextWithOptions(size, false, scale)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return image
    }

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public class var sharedConfiguration: AppConfiguration {
    struct Singleton {
        static let sharedAppConfiguration = AppConfiguration()
    }

    return Singleton.sharedAppConfiguration
}

// Checkout Lister: A Productivity App Built in Swift by Apple

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#import <Foundation/Foundation.h>

typedef void (^RCTaskBlock)(NSString *keyPath, id object, NSDictionary *change);

@interface TZReceptionist : NSObject
+ (id)receptionistForKeyPath:(NSString *)path
                      object:(id)obj
                       queue:(NSOperationQueue *)queue
                        task:(RCTaskBlock)task;
@end

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#!/usr/bin/env ruby

unless ARGV[0]
  puts 'Usage: newpost "the post title"'
  exit(-1)
end

date_prefix = Time.now.strftime("%Y-%m-%d")
postname = ARGV[0].strip.downcase.gsub(/ /, '-')
post = "./_posts/#{date_prefix}-#{postname}.md"

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1. ⌥ + ⌘ + ] Align Assignments

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• ⌃ + a Move to the beginning of the line.

• ⌃ + e Move to the end of the line.

• ⌃ + u Clear the entire line.

• ⌃ + w Delete the word in front of the cursor.

• ⌃ + r Search history.

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#!/usr/bin/env node

var checkprime = function(smallerPrimes, number) {
    isprime = 1;
    for (var i = 0; i < smallerPrimes.length; i++) {
        if (number % smallerPrimes[i] == 0) {
            isprime = 0;
            break;
        }
    }

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#import <mach/mach.h>
#import <mach/mach_host.h>

void print_free_memory ()
{
    mach_port_t host_port;
    mach_msg_type_number_t host_size;
    vm_size_t pagesize;

    host_port = mach_host_self();

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#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#

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KEYWORDS="TODO:|FIXME:|\?\?\?:|\!\!\!:"
find "${SRCROOT}" \( -name "*.h" -or -name "*.m" \) -print0 | xargs -0 egrep --with-filename --line-number --only-matching "($KEYWORDS).*\$" | perl -p -e "s/($KEYWORDS)/ warning: \$1/"

//via http://deallocatedobjects.com/posts/show-todos-and-fixmes-as-warnings-in-xcode-4