Doug Russell rustle
rustle
/ gist:4678755
Created
January 31, 2013 00:28
Couple of typedefs that I think make the NSFilePresenter block APIs a little easier to read
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| typedef void (^FilePresenterReacquirerBlock)(void); | |
| typedef void (^FilePresenterReaderBlock)(FilePresenterReacquirerBlock reacquirer); | |
| typedef void (^FilePresenterWriterBlock)(FilePresenterReacquirerBlock reacquirer); | |
| typedef void (^FilePresenterCompletionHandler)(NSError *errorOrNil); | |
| - (void)relinquishPresentedItemToReader:(FilePresenterReaderBlock)reader | |
| { | |
| // Do stuff here ahead of reading | |
| reader(^{ | |
| // Do stuff here after reading is done |
rustle
/ gist:5017569
Last active
December 14, 2015 02:59
Example of an NSValue subclass with a return value on getValue:
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| #import <Foundation/Foundation.h> | |
| @interface RSTLValue : NSValue | |
| - (BOOL)getValue:(void *)value expectedSize:(size_t)expectedSize; | |
| @end | |
| struct Foo { | |
| NSUInteger i; | |
| char * bar; | |
| }; |
rustle
/ gist:5027734
Created
February 25, 2013 04:23
An accessible UISlider subclass that closely emulates the time scrubber in Music.app
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| // | |
| // KATGShowControlsScrubber.m | |
| // KATG | |
| // | |
| // Created by Doug Russell on 2/24/13. | |
| // Copyright (c) 2013 Doug Russell. All rights reserved. | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at |
rustle
/ ArcLogic.h
Created
February 27, 2013 02:17
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| // | |
| // ARCLogic.h | |
| // | |
| #ifndef ARCLOGIC | |
| #define ARCLOGIC | |
| #ifdef HASARC | |
| #undef HASARC | |
| #endif |
rustle
/ gist:5079872
Created
March 4, 2013 04:14
Example of prefixing a list with a leading character. In this case, adding a • to the front of each line.
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| NSString *someText = ...; | |
| NSMutableString *someLines = [NSMutableString new]; | |
| [someText enumerateLinesUsingBlock:^(NSString *line, BOOL *stop) { | |
| // Make sure the line isn't just whitespace | |
| NSMutableString *mutableLine = [line mutableCopy]; | |
| CFStringTrimWhitespace((__bridge CFMutableStringRef)mutableLine); | |
| if ([mutableLine length]) | |
| { | |
| [someLines appendFormat:@" • %@\n", line]; | |
| } |
rustle
/ gist:5112576
Created
March 7, 2013 22:49
Example of an ESHTTPOperation subclass for downloading a file directly to disk using NSOutputStream including resuming
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| // | |
| // KATGDownloadOperation.h | |
| // KATG | |
| // | |
| // Created by Doug Russell on 3/7/13. | |
| // Copyright (c) 2013 Doug Russell. All rights reserved. | |
| // | |
| #import "ESHTTPOperation.h" |
rustle
/ gist:5556512
Created
May 10, 2013 18:46
Seems like ACAccountType needs a better isEqual: implementation
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| // Works fine | |
| accounts = [accounts filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(ACAccount *evaluatedObject, NSDictionary *bindings) { | |
| return [[[evaluatedObject accountType] identifier] isEqualToString:[self.accountType identifier]]; | |
| }]]; | |
| // No dice | |
| accounts = [accounts filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(ACAccount *evaluatedObject, NSDictionary *bindings) { | |
| return [[evaluatedObject accountType] isEqual:self.accountType]; |
rustle
/ gist:5578532
Created
May 14, 2013 19:02
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| #pragma mark - Memory Cache Subscripting | |
| // Allow self[key] for looking up and writing to memory cache | |
| // This is mostly a novelty | |
| - (id)objectForKeyedSubscript:(id)key | |
| { | |
| return [self.memoryCache objectForKey:key]; | |
| } |
rustle
/ gist:6406932
Created
September 1, 2013 19:58
Example of the kind of thorough checks you can do in asserts that would be too expensive to leave in production code
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| #if !defined(NS_BLOCK_ASSERTIONS) | |
| #define RSTLSetOfStringsAssert(set) [set enumerateObjectsUsingBlock:^(id obj, BOOL *stop) { NSParameterAssert([obj isKindOfClass:[NSString class]]); }]; | |
| #else | |
| #define RSTLSetOfStringsAssert(set) | |
| #endif |
rustle
/ gist:6618451
Created
September 19, 2013 02:32
A __attribute__ decorator that causes method calls to become implicit dispatches could be interesting: __attribute__((dispatch, async, priority))
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| #import <Foundation/Foundation.h> | |
| #include <objc/message.h> | |
| typedef void (*DISPATCH_IMP_NOARGS_NORETURN)(id, SEL); | |
| typedef id (*DISPATCH_IMP_NOARGS)(id, SEL); | |
| @interface Foo : NSObject | |
| @end |