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How do I make a column unique and index it in a Ruby on Rails migration?
I would like to make a column unique in Ruby on Rails migration script. What is the best way to do it? Also is there a way to index a column in a table?
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Merge two (or more) lists into one, in C# .NET
Is it possible to convert two or more lists into one single list, in .NET using C#?
13 Answers
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What's the meaning of interface{}?
I'm new to interfaces and trying to do SOAP request by github
6 Answers
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Accessing @attribute from SimpleXML
I am having a problem accessing the @attribute section of my SimpleXML object. When I var_dump the entire object, I get the correct output, and when I var_dump the rest of the object (the nested tags), I get the correct output, but when I follow the docs and var_dump $xml->OFFICE->{'...
preferredStatusBarStyle isn't called
I followed this thread to override -preferredStatusBarStyle , but it isn't called.
Are there any options that I can change to enable it? (I'm using XIBs in my project.)
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How can I select random files from a directory in bash?
I have a directory with about 2000 files. How can I select a random sample of N files through using either a bash script or a list of piped commands?
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ADB Android Device Unauthorized
Since I reinstalled Eclipse (simply deleted and downloaded it again) I can't debug my applications on Samsung Galaxy i9001 (with CyanogenMod - Android 4.4.2). It worked fine before reinstallation.
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Why can't I inherit static classes?
I have several classes that do not really need any state. From the organizational point of view, I would like to put them into hierarchy.
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iOS: Multi-line UILabel in Auto Layout
I'm having trouble trying to achieve some very basic layout behavior with Auto Layout. My view controller looks like this in IB:
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Binding a Button's visibility to a bool value in ViewModel
How do I bind the visibility of a button to a bool value in my ViewModel?
7 Answers
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