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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
In my Rails (3.2) app, I have a bunch of tables in my database but I forgot to add a few not null constraints. I've googled around but I can't find how to write a migration which adds not null to an existing column.
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Prevent strace from abbreviating arguments?
...which specifies the maximum length of a string to display (the default is 32).
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Deprecated ManagedQuery() issue
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You could replace it with context.getContentResolver().query and LoaderManager (you'll need to...
POST request send json data java HttpUrlConnection
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edited May 25 '18 at 23:34
rogerdpack
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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
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Elliott HughesElliott Hughes
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When should I mock?
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A unit test should test a single codepath through a single method. When the execution of a met...
What is context in _.each(list, iterator, [context])?
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The context parameter just sets the value of this in the iterator function.
var someOtherArra...
What is .sln.docstates file created by Visual Studio Productivity Power Tools?
Visual Studio Productivity Power Tools Version 10.0.20427.1, updated 10 May 2011, is creating a .sln.docstates file.
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MbUnit under Linux, used within an F# project?
...g/packages/GallioBundle/3.4.14. See this post: https://stackoverflow.com/a/21185517/9798633
2) Make sure your tests are compiled with the same version of MbUnit as was distributed with Gallio, as discussed here: https://stackoverflow.com/a/2242849/9798633
3) If you try running in VS in a VM, doubl...
Why does Math.Floor(Double) return a value of type Double?
...ally be within the range of int or long, so you cast it:
double d = 1000.1234d;
int x = (int) Math.Floor(d);
but the onus for that cast is on the developer, not on Math.Floor itself. It would have been unnecessarily restrictive to make it just fail with an exception for all values outside the ran...