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receiver type *** for instance message is a forward declaration

... FWIW, I got this error when I was implementing core data in to an existing project. It turned out I forgot to link CoreData.h to my project. I had already added the CoreData framework to my project but solved the issue by linking to the fram...
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What's the difference between the Dependency Injection and Service Locator patterns?

...id – Charles Graham Oct 13 '09 at 2:05 2 I love ol' Steve Yegge and the title of that article is ...
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Custom exception type

... From WebReference: throw { name: "System Error", level: "Show Stopper", message: "Error detected. Please contact the system administrator.", htmlMessage: "Error detected. Please contact the <a href=\"mailto:sysadmin@acme-widgets.com\">system...
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rgdal package installation

...apt-file package and run : $ sudo apt-file update Then, when you get an error such as : configure: error: proj_api.h not found in standard or given locations. You can use the following command to find which package you must install to get the missing file : $ apt-file search proj_api.h libpro...
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Why cast an unused function parameter value to void?

... Active Oldest Votes ...
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PHP: If internet explorer 6, 7, 8 , or 9

.../3fb4k. – jdgregson Feb 21 '17 at 9:05 add a comment  |  ...
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How to create a directory if it doesn't exist using Node.js?

...? The code will continue as if there was a directory and probably throw an error later, when it tries writing to files in it. The answer by @josh3736 is much more complete and totally underrated. – Benni Jan 15 '19 at 7:59 ...
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Constructor overload in TypeScript

...'s implied definition, it does limit the code that can be blamed for type errors to the overloaded implementation. – chuckj Apr 20 '16 at 23:06  |  ...
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Why does UITableViewCell remain highlighted?

... | edited Nov 19 '15 at 7:05 Mihir Oza 2,50933 gold badges2929 silver badges5454 bronze badges answered ...
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What does Provider in JAX-RS mean?

...on 2.1 Final Release July 13, 2017) download.oracle.com/otn-pub/jcp/jaxrs-2_1-final-spec/… – burntsugar Jan 4 '19 at 0:57 add a comment  |  ...