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What do REFRESH and MERGE mean in terms of databases?
I'm curious and need to find this answer quick. Google won't help much.
2 Answers
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Possible to access the index in a Hash each loop?
I'm probably missing something obvious, but is there a way to access the index/count of the iteration inside a hash each loop?
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Concatenate strings in Less
I think this is not possible, but I thought I ask in case there is a way. The idea is that I have a variable for path to web resource folder:
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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
I have a ViewPager hooked up to a FragmentPagerAdapter that's displaying three fragments. The ViewPager appears to destroy a hosted fragment's view when it is more than one swipe away from the current position.
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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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Disable vertical scroll bar on div overflow: auto
Is it possible to allow only a horizontal scroll bar when using overflow:auto (or scroll)?
8 Answers
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Why does javascript map function return undefined?
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You aren't returning anything in the case that the item is not a string. In that case, the function returns undefined, what you are seeing in the result.
The map function is used to map one value to another, but it looks you a...
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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Git: copy all files in a directory from another branch
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As you are not trying to move the files around in the tree, you should be able to just checkout the directory:
git checkout master -- dirname
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