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NSPredicate: filtering objects by day of NSDate property

...ponents = [calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth ) fromDate:[NSDate date]]; //create a date with these components NSDate *startDate = [calendar dateFromComponents:components]; [components setMonth:1]; [components setDay:0]; //reset the other components [components setYear:0];...
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Using a constant NSString as the key for NSUserDefaults

...se constants should be defined as static if they are only going to be used from within a single file. I say this because I have run across this problem myself: if you do not declare them as static, then they will exist in the global namespace, and you will not be able to use a variable with the same...
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The resulting API analysis is too large when upload app to mac store

...ppears to have abandoned her work and removed any trace of the application from her website. Chimp Studios created App Scanner to do the same thing, but it hasn't been updated since 2011. Unfortunately, for large projects -- and this includes projects with a lot of extra pods from CocoaPods -- ther...
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What is the “continue” keyword and how does it work in Java?

... A continue statement without a label will re-execute from the condition the innermost while or do loop, and from the update expression of the innermost for loop. It is often used to early-terminate a loop's processing and thereby avoid deeply-nested if statements. In the fol...
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C++ Tuple vs Struct

...on about tuple and struct and I write some simple benchmarks with the help from one of my colleague to identify the differences in term of performance between tuple and struct. We first start with a default struct and a tuple. struct StructData { int X; int Y; double Cost; std::str...
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In java how to get substring from a string till a character c?

...ing firstWord = filename.replaceAll("\\..*","") This replaces everything from the first dot to the end with "" (ie it clears it, leaving you with what you want) Here's a test: System.out.println("abc.def.hij".replaceAll("\\..*", ""); Output: abc ...
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What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?

... is easy to write a bit-packing implementation for vectors -- here is one, from the (obsolete) uvector library. Under the hood, Repa uses Vectors, so I think it inherits that libraries representation choices. Is there a predefined datatype that can help me here by packing multiple pixels into a wor...
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URL query parameters to dict python

... Use the urllib.parse library: >>> from urllib import parse >>> url = "http://www.example.org/default.html?ct=32&op=92&item=98" >>> parse.urlsplit(url) SplitResult(scheme='http', netloc='www.example.org', path='/default.html', query='...
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My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets

... and the web regarding the keywords in my question title and learned a lot from them. Some of the questions I read are related to specific implementation challenges while others focus on general concepts. I just want to make sure I understood all of the concepts and the reasoning why technology X wa...
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How can I consume a WSDL (SOAP) web service in Python?

...tion, it loads the WSDL live and creates an object you can immediately use from it. – EnigmaCurry Feb 23 '11 at 15:43 19 ...