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@interface NSObject (Debounce)

- (void)debounce:(SEL)action delay:(NSTimeInterval)delay;

@end

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private enum ListNode<Element> {
    case End
    indirect case Node(Element, next: ListNode<Element>)
    
    func cons(x: Element) -> ListNode<Element> {
        return .Node(x, next: self)
    }
}

public struct ListIndex<Element> {

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protocol NonemptyCollection: Collection {
    var first: Iterator.Element { get }
}

enum NonemptyIndex<Base: Collection>: Comparable {
    case head
    case tail(Base.Index)

    static func ==(lhs: NonemptyIndex, rhs: NonemptyIndex) -> Bool {
        switch (lhs,rhs) {

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import Darwin

extension sockaddr_storage {

    /// Calls a closure with traditional BSD Sockets address parameters.
    ///
    /// This is used to call BSD Sockets routines like `connect`, which accept their 
    /// address as an `sa` and `saLen` pair.  For example:
    ///
    ///     let ss: sockaddr_storage = …

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import UIKit
import Foundation

struct IntrospectionType<T> {
    let classType: Bool
    let structType: Bool
    let introspectionType: T
    
    init(_ introspectionType: T) {
        self.introspectionType = introspectionType

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enum Maybe<T> {
	case Just(T)
	case Nothing
}

extension Maybe {
	var isJust : Bool {
		guard case .Just = self else { return false }
		return true
	}

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#include <assert.h>
#include <stdbool.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/sysctl.h>

static bool AmIBeingDebugged(void)
    // Returns true if the current process is being debugged (either 
    // running under the debugger or has a debugger attached post facto).
{

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#import <UIkit/UIKit.h>

@protocol LOLDelegate
@end

@interface LOLClass : NSObject <LOLDelegate>

@property (nonatomic) id<LOLDelegate> strongDelegate;

@end

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#import <Cocoa/Cocoa.h>
#import <Foundation/Foundation.h>
#import <XCTest/XCTest.h>

@interface NSDecimalNumberTests : XCTestCase

@end

@implementation DecimalTests

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while true ; do sleep 15 && echo `date`‘ Capturing screenshot…’ && screencapture -C -m -t jpg -x -f cap.`date +%s`.jpg ; done