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CSS hide scroll bar if not needed

I am trying to figure out how I can hide the overflow-y:scroll; if not needed. What I mean is that I am building a website and I have a main area which posts will be displayed and I want to hide the scroll bar if content does not exceed the current width. ...
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What do REFRESH and MERGE mean in terms of databases?

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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

...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: 6...
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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...
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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

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Creating a textarea with auto-resize

There was another thread about this , which I've tried. But there is one problem: the textarea doesn't shrink if you delete the content. I can't find any way to shrink it to the correct size - the clientHeight value comes back as the full size of the textarea , not its contents. ...
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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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