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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?

All the examples of strong parameters in Rails 4 docs use 2 Answers 2 ...
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What is the $? (dollar question mark) variable in shell scripting? [duplicate]

...al Parameters" http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_05_02 : ? Expands to the decimal exit status of the most recent pipeline (see Pipelines). man bash "Special Parameters": The shell treats several parameters specially. These parameters may only be refe...
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Continuous Integration for Ruby on Rails? [closed]

...he results. I came from a .NET shop that used CruiseControl.NET and was really spoiled with its ease of use and rich status/reporting. ...
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URL-parameters and logic in Django class-based views (TemplateView)

...re using a TemplateView which means that you would do the logic in your get_context_data override. – Ngenator Apr 2 '13 at 12:58 4 ...
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What is the difference between log4net and ELMAH?

...,error) with log4net but store it in ELMAH nuget.org/packages/elmahappender_log4net_1.2.10 – Sturla Feb 18 '14 at 16:21 add a comment  |  ...
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commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated

...ecified. Watch out with include files! You can use UIForm components in parallel, but they won't process each other during submit. You should also watch out with "God Form" antipattern; make sure that you don't unintentionally process/validate all other (invisible) inputs in the very same form (e.g....
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UITableView - change section header color

...lor:[UIColor clearColor]]; return headerView; } Swift: func tableView(_ tableView: UITableView!, viewForHeaderInSection section: Int) -> UIView! { let headerView = UIView(frame: CGRect(x: 0, y: 0, width: tableView.bounds.size.width, height: 30)) if (section == integerRepresentingYourSect...
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Replace tabs with spaces in vim

... What this all means, is nicely explained on the Vim wiki. – Serge Stroobandt Dec 11 '16 at 1:43 ...
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How could I ignore bin and obj folders from git repository?

... it does not work when you first commit all files and then add .gitignore file to your repo and commit it. Newly ignored files are still will be shown as modified (if you rebuild, for example). – vlad2135 Jun 23 '19 at 15:30 ...
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Disable Browser Link - which toolbar

...olbar, but that toolbar doesn't show up in my visual studio. I've enabled all the debug toolbars but still no browser link button. ...