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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.
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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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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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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?
...f 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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