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Add a reference column migration in Rails 4
A user has many uploads. I want to add a column to the uploads table that references the user . What should the migration look like?
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Environment variable substitution in sed
If I run these commands from a script:
10 Answers
10
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How to set default value for form field in Symfony2?
Is there an easy way to set a default value for text form field?
22 Answers
22
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JavaScript: Check if mouse button down?
Is there a way to detect if a mouse button is currently down in JavaScript?
16 Answers
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Are string.Equals() and == operator really same? [duplicate]
Are they really same? Today, I ran into this problem. Here is the dump from the Immediate Window:
8 Answers
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How to calculate the SVG Path for an arc (of a circle)
Given a circle centered at (200,200), radius 25, how do I draw an arc from 270 degree to 135 degree and one that goes from 270 to 45 degree?
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Git: what is a dangling commit/blob and where do they come from?
I'm looking for the basic info on dangling commits & blobs.
4 Answers
4
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What is the difference between DSA and RSA?
It appears they are both encryption algorithms that require public and private keys. Why would I pick one versus the other to provide encryption in my client server application?
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C++ display stack trace on exception
I want to have a way to report the stack trace to the user if an exception is thrown. What is the best way to do this? Does it take huge amounts of extra code?
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Co-variant array conversion from x to y may cause run-time exception
I have a private readonly list of LinkLabel s ( IList<LinkLabel> ). I later add LinkLabel s to this list and add those labels to a FlowLayoutPanel like follows:
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