kylesluder’s gists

kylesluder / WithoutFirst.swift

Created November 24, 2014 17:08

A version of dropFirst() that works on any SequenceType or GeneratorType

	#!xcrun swift

	func withoutFirst<T, G: GeneratorType where G.Element == T>(genGiver: () -> G) -> SequenceOf<T> {
	return SequenceOf {
	_ -> G in
	var g = genGiver()
	g.next()
	return g
	}
	}

kylesluder / AsyncAwait.swift

Last active May 15, 2020 06:01

A C#-style Async/Await implementation in Swift

	// A much better version of C#-style Async/Await. It can return values!
	import Cocoa

	struct Await<T> {
	// private
	let group: dispatch_group_t
	let getResult: () -> T

	// public
	func await() -> T { return getResult() }

kylesluder / ObjCSuper.m

Last active August 29, 2015 13:56

An Objective-C analogue to the Python super class.

	// % clang -framework Foundation -o ObjCSuper ObjCSuper.m SuperTrampoline.s
	// % ./ObjCSuper
	//
	// 2014-02-15 23:03:32.498 ObjCSuper[1296:507] Subclass impl
	// 2012014-02-15 23:03:32.498 ObjCSuper[1296:507] Subclass impl4-02-15 23:03:32.500 ObjCSuper[1296:507] b respondsToSelector:@selector(retain)? YES
	// 2014-02-15 23:03:32.500 ObjCSuper[1296:507] b respondsToSelector:@selector(subclassMethod)? YES
	// 2014-02-15 23:03:32.501 ObjCSuper[1296:507] Superclass impl
	// 2014-02-15 23:03:32.501 ObjCSuper[1296:507] b_super respondsToSelector:@selector(retain)? YES
	// 2014-02-15 23:03:32.501 ObjCSuper[1296:507] b_super respondsToSelector:@selector(subclassMethod)? NO

kylesluder / cleanup.c

Created February 4, 2014 22:01

Neither of these runs the cleanup function

	#include <stdio.h>

	static void cleanup_func(int *foo)
	{
	printf("cleanup! %d\n", *foo);
	}

	int main(int argc, char **argv)
	{
	return 0;

kylesluder / AutoNotifyTest.m

Last active August 29, 2015 13:55

A demonstration of an inefficiency in mutable array proxies that I think could be improved (rdar://problem/15966921)

	// clang -framework Foundation -o AutoNotifyTest AutoNotifyTest.m

	/***
	Expected results:

	willChange:valuesAtIndexes:forKey:
	removeObjectFromBarAtIndex:
	removeObjectFromBarAtIndex:
	removeObjectFromBarAtIndex:
	removeObjectFromBarAtIndex:

kylesluder / com.apple.security.pboxd_2013-09-26_164326_Gooi.sample.txt

Created September 26, 2013 23:45

Sample of powerbox

	Analysis of sampling com.apple.security.pboxd (pid 20558) every 1 millisecond
	Process: com.apple.security.pboxd [20558]
	Path: /System/Library/PrivateFrameworks/RemoteViewServices.framework/XPCServices/com.apple.security.pboxd.xpc/Contents/MacOS/com.apple.security.pboxd
	Load Address: 0x10c951000
	Identifier: com.apple.security.pboxd
	Version: 2.0 (80.7)
	Code Type: X86-64 (Native)
	Parent Process: ??? [1]

	Date/Time: 2013-09-26 16:43:26.188 -0700

kylesluder / CovariantProtocolForwardDeclaration.m

Created July 22, 2013 21:32

	// RUN: %clang -fsyntax-only %s 2>&1 \| FileCheck %s
	#import <Foundation/NSObject.h>

	@protocol FooDelegate;
	@interface Foo : NSObject
	@property (weak) id<FooDelegate> delegate;
	@end

	@protocol FooDelegate <NSObject>
	- (void)doSomething;

kylesluder / gist:4734306

Created February 7, 2013 21:25

	diffcount () {
	awk '
	BEGIN { minuscount=0; pluscount=0; }
	/^-/ { minuscount = minuscount + 1; }
	/^\+/ { pluscount = pluscount + 1; }
	END { print "-" minuscount, "+" pluscount; }
	'
	}

kylesluder / gist:3842250

Created October 5, 2012 20:40

Repeated Constraints

	>>> -[<NSSplitView: 0x105e20130> resizeWithOldSuperviewSize:] superview from {543, 453} to {543, 493}
	>>> -[<NSSplitView: 0x105e20130> setFrame:] from {{0, 0}, {543, 453}} to {{0, 0}, {0, 0}}

	(gdb) po [self constraintsAffectingLayoutForOrientation:1]
	<__NSArrayI 0x105bbfa00>(
	<NSLayoutConstraint:0x105e19350 NSSplitView:0x105e20130.bottom == NSView:0x105e142a0.bottom>,
	<NSLayoutConstraint:0x105e1c9a0 V:\|-(0)-[NSSplitView:0x105e20130] (Names: '\|':NSView:0x105e142a0 )>,
	<NSLayoutConstraint:0x105e19350 NSSplitView:0x105e20130.bottom == NSView:0x105e142a0.bottom>
	)

kylesluder / gist:3835936

Created October 4, 2012 19:46

Split View Frame Sizing

	On 10.7.5:

	>>> -[<NSView: 0x108064e50> resizeWithOldSuperviewSize:] superview from {543, 475} to {543, 515}
	>>> -[<NSView: 0x108064e50> setFrame:] from {{0, 0}, {543, 453}} to {{0, 0}, {543, 493}}
	>>> -[<NSView: 0x108064e50> setFrameSize:] from {543, 453} to {543, 493}
	>>> -[<NSView: 0x108064e50> resizeSubviewsWithOldSize:] from {543, 453} to {543, 493}
	>>> -[<NSSplitView: 0x10806cb10> resizeWithOldSuperviewSize:] superview from {543, 453} to {543, 493}
	>>> -[<NSSplitView: 0x10806cb10> setFrame:] from {{0, 0}, {543, 453}} to {{0, 0}, {0, 0}} /* WTF??? */
	>>> -[<NSSplitView: 0x10806cb10> setFrameSize:] from {543, 453} to {0, 0}
	>>> ... and so on, causing an eventual constraint violation ...

Kyle Sluder kylesluder