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Adding a column to an existing table in a Rails migration
...Users model which needs an :email column (I forgot to add that column during the initial scaffold).
11 Answers
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reading from app.config file
I am trying to read StartingMonthColumn and CategoryHeadingColumn
from the below app.config file using the code
8 Answers
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How do I create a dynamic key to be added to a JavaScript object variable [duplicate]
I'm trying something like this, but this example does not work.
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How to view method information in Android Studio?
In Eclipse, when you hover your mouse over a method, a window would appear with a description of what the method does, what the parameters mean and what it returns. Is there a way to get Android Studio to do the same thing?
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What is the easiest way to get current GMT time in Unix timestamp format?
... different packages ( datetime , time , calendar ) as can be seen here in order to deal with time. I made a big mistake by using the following to get current GMT time time.mktime(datetime.datetime.utcnow().timetuple())
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How to get instance variables in Python?
Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code:
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A beginner's guide to SQL database design [closed]
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I started with this book: Relational Database Design Clearly Explained (The Morgan Kaufmann Series in Data Management Systems) (Paperback) by Jan L. Harrington and found it very clear and helpful
and as you get up to speed this one was good too Database Systems: A Practical Approach to De...
How do I forward declare an inner class? [duplicate]
... possible. You cannot forward declare a nested structure outside the container. You can only forward declare it within the container.
You'll need to do one of the following
Make the class non-nested
Change your declaration order so that the nested class is fully defined first
Create a common...
What does ^M character mean in Vim?
I keep getting ^M character in my vimrc and it breaks my configuration.
15 Answers
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Remove a prefix from a string [duplicate]
I am trying to do the following, in a clear pythonic way:
6 Answers
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