Machx / CWFuture

CWFuture is a simple Objective-C Future implementation

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#CWFuture CWFuture is a simple Objective-C Future implementation. It takes a block which it avoids resolving its return value from, until you explicitly call '-resolveFuture' on the future itself, or call a method on the future in which the future must resolve the future value to forward the method onto the returned expression. The Future for the most part pretends to be the resolved future value, for example asking the future for its class or if it is equal to another object all trigger resolving the future and calling that on the returned expression instead.

An example

CWFuture *future = [CWFuture futureWithBlock:^{ return @(40 + 1 * 2); }];
		
NSLog(@"Components %ld",[(id)future compare:@21]);

In this example a NSNumber is returned from a block and its resolved value isn't known until the next line with the NSLog statement. In that line the CWFuture instance doesn't know how to respond to the -compare method so it resolves the future value and then forwards that message onto it which then returns 1 from it (a NSComparisonResult equaling NSOrderedDescending.)

##Unit Tests To run the unit tests you need to have linked against the Specta and Expecta projects.

##License CWFuture is licensed under the BSD 2 clause License

Copyright (c) 2013, Colin Wheeler
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 - Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

 - Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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CWFuture is a simple Objective-C Future implementation


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