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How do I run a Ruby file in a Rails environment?

...------ #!/usr/bin/env /Users/me/rails_project/script/rails runner Product.all.each { |p| p.price *= 2 ; p.save! } ------------------------------------------------------------- share | improve this...
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How do I remove code duplication between similar const and non-const member functions?

... C &>(*this).get()); } char c; }; The two casts and function call may be ugly but it's correct. Meyers has a thorough explanation why. share | improve this answer | ...
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How to use a class from one C# project with another C# project

...that you wish to access directly must have a sufficient access level: typically this means they must be made public. share | improve this answer | follow | ...
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MySQL query to get column names?

I'd like to get all of a mysql table's col names into an array in php? 21 Answers 21 ...
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Managing CSS Explosion

...been heavily relying on CSS for a website that I am working on. Right now, all the CSS styles are being applied on a per tag basis, and so now I am trying to move it to more of an external styling to help with any future changes. ...
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Hidden Features of MySQL

... Since you put up a bounty, I'll share my hard won secrets... In general, all the SQLs I tuned today required using sub-queries. Having come from Oracle database world, things I took for granted weren’t working the same with MySQL. And my reading on MySQL tuning makes me conclude that MySQL is be...
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Allowed characters in filename [closed]

Where can I find a list of allowed characters in filenames, depending on the operating system? (e.g. on Linux, the character : is allowed in filenames, but not on Windows) ...
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Nested defaultdict of defaultdict

... | edited Oct 14 '16 at 20:28 wim 241k7070 gold badges437437 silver badges578578 bronze badges a...
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Unsubscribe anonymous method in C#

...ered Oct 8 '08 at 15:33 Jacob KrallJacob Krall 24.8k66 gold badges5757 silver badges7373 bronze badges ...
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parsing JSONP $http.jsonp() response in angular.js

... UPDATE: since Angular 1.6 You can no longer use the JSON_CALLBACK string as a placeholder for specifying where the callback parameter value should go You must now define the callback like so: $http.jsonp('some/trusted/url', {jsonpCallbackParam: 'callback'}) Change/access/decla...