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Index on multiple columns in Ruby on Rails
I'm implementing functionality to track which articles a user has read.
2 Answers
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How do I analyze a program's core dump file with GDB when it has command-line parameters?
My program operates like this:
9 Answers
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Flexbox Not Centering Vertically in IE
I have a simple web page with some Lipsum content that is centered on the page. The page works fine in Chrome and Firefox. If I reduce the size of the window, the content fills the window until it can't and then adds a scroll bar and fills content off screen, toward the bottom.
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Get Selected index of UITableView
I want to have selected index for UITableView .
I have written following code:
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How do I compile C++ with Clang?
I have installed Clang by using apt-get in Ubuntu, and I can successfully compile C files using it. However, I have no idea how to compile C++ through it. What do I need to do to compile C++?
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Update a record without first querying?
Lets say I query the database and load a list of items. Then I open one of the items in a detail view form, and instead of re-querying the item out of the database, I create an instance of the item from the datasource in the list.
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How to pause for specific amount of time? (Excel/VBA)
I have an Excel worksheet that has the following macro. I'd like to loop it every second but danged if I can find the function to do that. Isn't it possible?
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What is a “cache-friendly” code?
What is the difference between " cache unfriendly code " and the " cache friendly " code?
9 Answers
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Easiest way to rename a model using Django/South?
I've been hunting for an answer to this on South's site, Google, and SO, but couldn't find a simple way to do this.
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Gesture recognizer and button actions
I have a view hierarchy that looks something like this:
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