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Adding :default => true to boolean in existing Rails column

...efault_value_to_show_attribute Then in the migration created: # That's the more generic way to change a column def up change_column :profiles, :show_attribute, :boolean, default: true end def down change_column :profiles, :show_attribute, :boolean, default: nil end OR a more specific option: d...
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What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?

... machine, yes, but multi-core machines and multi-threaded programs can use more than 1 CPU second per elapsed second. – Jonathan Leffler Dec 16 '14 at 12:19 ...
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Why is “Set as Startup” option stored in the suo file and not the sln file?

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Can (domain name) subdomains have an underscore “_” in it?

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How to make a element expand or contract to its parent container?

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Get file name from URL

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Get source JARs from Maven repository

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How do I convert datetime to ISO 8601 in PHP

...; // Updated ISO8601 Procedural For older versions of PHP, or if you are more comfortable with procedural code. echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46')); share | improve this ans...
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Is .NET Remoting really deprecated?

...ted, and it seems to me there are certainly scenarios where Remoting makes more sense than WCF. None of the Remoting-related objects or methods have been deprecated, even in version 4.0 of the framework. It is also my understanding that System.AddIn in the 3.5 and 4.0 frameworks use Remoting. ...
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Custom error pages on asp.net MVC3

...ion is "Index" (generic error page) and this controller will have a couple more actions for the errors that may appear to the user like "Handle500" or "HandleActionNotFound". ...