ddribin

- (BOOL)play:(NSError **)error;
{
    NSAssert(_graph == NULL, @"Graph is already started");

    OSStatus status;
    
    status = NewAUGraph(&_graph);
    if (status != noErr)
        goto failed;
    

ddribin

#define FAIL_ON_ERR(_X_) if ((status = (_X_)) != noErr) { goto failed; }

- (BOOL)play:(NSError **)error;
{
    NSAssert(_graph == NULL, @"Graph is already started");

    OSStatus status;
    
    FAIL_ON_ERR(NewAUGraph(&_graph));
    FAIL_ON_ERR([self addOutputNode]);

ddribin

#!/bin/sh                                                                       

export DEVELOPER_DIR=/Developer
xcode_build="${DEVELOPER_DIR}/usr/bin/xcodebuild"
"$xcode_build" -version

ddribin

% where python
/usr/bin/python
% python --version
Python 2.6.1
% python
Python 2.6.1 (r261:67515, Feb 11 2010, 00:51:29) 
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> for p in sys.path:

ddribin

- (NSArray *)arrayForReading
{
    NSArray * array;
    @synchronized (self) {
        array = [[_array retain] autorelease];
    }
    return array;
}

- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len

ddribin

typedef struct
{
	char * file;
	int line;
} DDFileContext;

#define DDCurrentFileContext() ((DDFileContext) { .file = __FILE__, .line = __LINE__})

ddribin

@protocol DDAsyncTaskDelegate <NSObject>
- (void)setResult:(id)result;
- (void)setError:(NSError *)error;
@end

@protocol DDAsyncTask <NSObject>
- (void)startWithDelegate:(id<DDAsyncTaskDelegate>)delegate;
@end

id<DDFuture> DDStartAsyncTask(id<DDAsyncTask> asyncTask);

ddribin

{
    NSOperationQueue * queue = [[[NSOperationQueue alloc] init] autorelease];
    
    NSURL * url = [NSURL URLWithString:@"http://www.example.com/"];
    id<DDFuture> futureData = [queue dd_submitCallableBlock:^id (NSError **error) {
        NSData * data = [NSData dataWithContentsOfURL:url options:0 error:error];
        return data;
    }];

    // This blocks for the result

ddribin

- (void) connectUsingBlock:(void (^)(BOOL success, NSError *error))block {
    block = [block copy];
    
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0),^(void){
        
        NSError *err = nil;
        BOOL success = YES;
        
        dispatch_async(dispatch_get_main_queue(),^ {
            block(success, err);

ddribin

    // Objective-C equivalent of Ruby's OptionParser
    // http://ruby-doc.org/stdlib/libdoc/optparse/rdoc/classes/OptionParser.html
    [optionsParser on:@"-b" :@"--block ARG" :@"Set block arg" :^(id argument) {
        NSLog(@"arg: %@", argument);
    }];