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New CPU Usage cache

Currently: Parallel C arrays of Cocoa text system objects, colors, etc.
	drawRect: looks up the objects it needs in those arrays, indexed by the CPU usage percentage, and creates and caches whatever it doesn't already have.
Problem: drawRect: has a slow path where the cache does not contain the needed objects yet, so it must create them. Even the check itself slows down every pass through drawRect:.

Solution: A single array containing blocks.
Initially, this would be filled with all the same block, each of which creates the needed objects, creates a block that captures those objects and does the drawing, and replaces itself in the cache with the new block.
drawRect: simply calls the appropriate block in the array, unconditionally. The slow-path block will move itself out of the way when it's no longer needed.

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#import <Foundation/Foundation.h>

@interface Foo: NSObject
- (void) takeBool:(BOOL)yorn;
- (void) takeDouble:(double)d;
@end

int main(int argc, char **argv) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

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@interface AutoScrollView ()

- (id) commonInit __attribute__((objc_method_family(init)));

@property(nonatomic, assign, getter=isAutoScrolling) BOOL autoScrolling;
@property(nonatomic, retain) NSTimer *autoScrollTimer, *delayedStartScrollingTimer;
@property(nonatomic, retain) UIGestureRecognizer *tapRecognizer;

@end

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//Core Graphics method
		CGDataProviderRef provider = CGDataProviderCreateWithURL((__bridge CFURLRef)fontURL);
		CGFontRef graphicsFont = CGFontCreateWithDataProvider(provider);
		CTFontRef coreTextFont = CTFontCreateWithGraphicsFont(graphicsFont, fontSize, /*matrix*/ NULL, /*attributes*/ NULL);
		if (coreTextFont) {
			NSFont *font = (__bridge NSFont *)coreTextFont;
			[fonts addObject:font];
			CFRelease(coreTextFont);
		}
		CGFontRelease(graphicsFont);

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#import <Foundation/Foundation.h>

static NSString *getString(void);

int main(int argc, char **argv) {
	@autoreleasepool {
		NSLog(@"%@", getString());
	}
	return EXIT_SUCCESS;
}

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// Copyright (c) 2012 Colin Barrett, Springs & Struts <colin@springsandstruts.com>
// Released under the MIT license. http://www.opensource.org/licenses/mit-license.html

#import <Foundation/Foundation.h>

@interface NSEnumerator (SSEnumeratorWithBlocks)
- (void)ss_enumerateObjectsUsingBlock:(void (^)(id obj, BOOL *stop))enumBlock;
@end

@implementation NSEnumerator (SSEnumeratorWithBlocks)

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CC=clang
CFLAGS+=-std=c99 -g
LDFLAGS+=-framework Foundation 

dispatch_once_reentrancy_test: dispatch_once_reentrancy_test.o

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#import <Foundation/Foundation.h>
#if TARGET_OS_IPHONE
#	import <UIKit/UIKit.h>
#else
#	import <AppKit/AppKit.h>
#endif

@interface PRH2Vector: NSObject

@property(readonly) CGPoint pointValue;

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#import <Foundation/Foundation.h>

int main(int argc, char **argv) {
	@autoreleasepool {
		NSCharacterSet *charactersInWord = [NSCharacterSet characterSetWithCharactersInString:@"secretagogue"];
		NSMutableCharacterSet *guessedCharacters = [NSMutableCharacterSet characterSetWithCharactersInString:@""];
		[guessedCharacters addCharactersInString:@"s"];
		[guessedCharacters addCharactersInString:@"e"];
		[guessedCharacters addCharactersInString:@"c"];
		[guessedCharacters addCharactersInString:@"r"];

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About compression

Audio compression is used to reduce the dynamic range of a recording. Dynamic range is the difference between the loudest and softest parts of an audio signal. It was originally used to guard against defects when cutting wax and vinyl phonograph records, but generally became useful as a way of increasing the loudness of an audio recording without achieving distortion.

The goal of most compression applications is to increase the amplitude of the softest parts of a recording, without increasing the amplitude of the loudest parts.

Compressor anatomy

Compressors generally all have the same conceptual parts. However, not all compressors present variable controls for all parts to the user. If you don't see all of your compressor's controls here, there's a chance it either has a fixed value (and no control), or is named something else: