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CSS: How to position two elements on top of each other, without specifying a height?

I have two DIVs that I need to position exactly on top of each other. However, when I do that, the formatting gets all screwed up because the containing DIV acts like there is no height. I think this is the expected behavior with position:absolute but I need to find a way to position these two ele...
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How to select only the first rows for each unique value of a column

Let's say I have a table of customer addresses: 5 Answers 5 ...
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Linux find file names with given string

I'm on Ubuntu, and I'd like to find all files in the current directory and subdirectories whose name contains the string "John". I know that grep can match the content in the files, but I have no idea how to use it with file names. Any help would be appreciated. ...
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Drawing a line/path on Google Maps

I've been busy for a long time finding out how to draw a line between two (GPS) points on the map in HelloMapView but with no luck. ...
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Placement of the ng-app directive (html vs body)

I recently reviewed the code for a webapp built with angular and found that it was written with the ng-app="myModule" directive placed on the <body> tag. When learning angular, I've only ever seen it used on the <html> tag, as recommended by the angular docs here , here , and in...
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Convert JavaScript String to be all lower case?

How can I convert a JavaScript string value to be in all lower case letters? 14 Answers ...
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how to get request path with express req object

I'm using express + node.js and I have a req object, the request in the browser is /account but when I log req.path I get '/' --- not '/account'. ...
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Can I call memcpy() and memmove() with “number of bytes” set to zero?

Do I need to treat cases when I actully have nothing to move/copy with memmove() / memcpy() as edge cases 2 Answers ...
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How to for each the hashmap? [duplicate]

I have this field: 7 Answers 7 ...
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Understanding colors on Android (six characters)

I am trying to understand how colors work in Android. I have this color set as the background of my LinearLayout , and I get a background gray with some transparency: ...