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Rails Migration: Remove constraint
I have a table in a Rails application which (in schema.rb) looks like:
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MySQL: how to get the difference between two timestamps in seconds
Is there a way I can make a query in MySQL that will give me the difference between two timestamps in seconds, or would I need to do that in PHP? And if so, how would I go about doing that?
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ng-options with simple array init
I'm a little bit confused with Angular and ng-options .
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Instance v state variables in react.js
In react.js, is it better to store a timeout reference as an instance variable (this.timeout) or a state variable (this.state.timeout)?
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Extracting substrings in Go
I'm trying to read an entire line from the console (including whitespace), then process it. Using bufio.ReadString, the newline character is read together with the input, so I came up with the following code to trim the newline character:
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Installing CocoaPods: no response
Trying to install CocoaPods from the terminal:
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Print function log /stack trace for entire program using firebug
Firebug has the ability to log calls to a particular function name. I'm looking for a bug that sometimes stops a page from rendering, but doesn't cause any errors or warnings. The bug only appears about half the time. So how do I get a list of all the function calls for the entire program, or som...
Aligning UIToolBar items
I have three UIBarButtonItem created as below. They align left and I'd like to align center so there isn't a gap on the right side. I don't see an align property on UIToolBar . Is there another way to accomplish this?
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Does constexpr imply inline?
Consider the following inlined function :
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