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Assigning default value while creating migration file
Ok I use above line to create migration file that automatically generates code in the generated file to add a column to a model Tweet with datatype integer. Now I want to add default value to the added column while generating the migration file. Is that possible? I googled it but couldn't find. Guys...
Prevent ViewPager from destroying off-screen views
...troy a hosted fragment's view when it is more than one swipe away from the current position.
3 Answers
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Unittest setUp/tearDown for several tests
Is there a function that is fired at the beginning/end of a scenario of tests? The functions setUp and tearDown are fired before/after every single test.
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Postgresql: Conditionally unique constraint
I'd like to add a constraint which enforces uniqueness on a column only in a portion of a table.
2 Answers
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Emulate ggplot2 default color palette
What function can I use to emulate ggplot2's default color palette for a desired number of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
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Concatenating two one-dimensional NumPy arrays
I have two simple one-dimensional arrays in NumPy . I should be able to concatenate them using numpy.concatenate . But I get this error for the code below:
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Maven: how to do parallel builds?
When you build with maven on a multicore / multi-CPU machine it would often be possible to build different subprojects in parallel. Is there a way to do this with maven? Is there a plugin for this / whatever?
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Collections.emptyList() returns a List?
I'm having some trouble navigating Java's rule for inferring generic type parameters. Consider the following class, which has an optional list parameter:
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What is the difference between `git fetch origin` and `git remote update origin`?
In response to a question about pulling one commit at a time from a git repository , I was recommended to use git remote update instead of git fetch . I have read both man pages but cannot say I understood either in its entirety.
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Regex for string contains?
What is the regex for simply checking if a string contains a certain word (e.g. 'Test')? I've done some googling but can't get a straight example of such a regex. This is for a build script but has no bearing to any particular programming language.
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