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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?

I was going through the release notes for Xcode 4.4 and noticed this: 3 Answers 3 ...
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Underscore vs Double underscore with variables and methods [duplicate]

...butes: interface, _internal, __private But try to avoid the __private form. I never use it. Trust me. If you use it, you WILL regret it later. Explanation: People coming from a C++/Java background are especially prone to overusing/misusing this "feature". But __private names don't...
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How do I unit test web api action method when it returns IHttpActionResult?

... Here Ok() is just a helper for the type OkResult which sets the response status to be HttpStatusCode.Ok...so you can just check if the instance of your action result is an OkResult...some examples(written in XUnit): // if your action returns: NotFound...
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Java abstract interface

... Why is it necessary for an interface to be "declared" abstract? It's not. public abstract interface Interface { \___.__/ | '----> Neither this... public void interfacing(); public abstract boolean inte...
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Should I use 'has_key()' or 'in' on Python dicts?

... As an addition, in Python 3, to check for the existence in values, instead of the keys, try >>> 1 in d.values() – riza Aug 24 '09 at 18:12 ...
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How to reshape data from long to wide format

... reshape is an outstanding example for a horrible function API. It is very close to useless. – NoBackingDown Oct 26 '17 at 15:18 15 ...
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How can I check if a Perl array contains a particular value?

I am trying to figure out a way of checking for the existence of a value in an array without iterating through the array. 1...
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Entity Framework rollback and remove bad migration

I'm using EF 6.0 for my project in C# with manual migrations and updates. I have about 5 migrations on the database, but I realised that the last migration was bad and I don't want it. I know that I can rollback to a previous migration, but when I add a new (fixed) migration and run Update-Database,...
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How to get current timestamp in milliseconds since 1970 just the way Java gets

...at the end of the line to get number of milliseconds in a fundamental type format. – P1r4nh4 Nov 24 '14 at 14:36 1 ...
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Loop through files in a directory using PowerShell

...ChildItem "C:\Users\gerhardl\Documents\My Received Files" -Filter *.log | Foreach-Object { $content = Get-Content $_.FullName #filter and save content to the original file $content | Where-Object {$_ -match 'step[49]'} | Set-Content $_.FullName #filter and save content to a new fi...