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Test if a command outputs an empty string

How can I test if a command outputs an empty string? 11 Answers 11 ...
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Replace a newline in TSQL

I would like to replace (or remove) a newline character in a TSQL-string. Any Ideas? 12 Answers ...
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Git Tag list, display commit sha1 hashes

so the git tag command lists the current git tags 8 Answers 8 ...
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Calculate total seconds in PHP DateInterval

What is the best way to calculate the total number of seconds between two dates? So far, I've tried something along the lines of: ...
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Why is it important to override GetHashCode when Equals method is overridden?

Given the following class 14 Answers 14 ...
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Specify multiple attribute selectors in CSS

What is the syntax for doing something like: 5 Answers 5 ...
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Why does MYSQL higher LIMIT offset slow the query down?

Scenario in short: A table with more than 16 million records [2GB in size]. The higher LIMIT offset with SELECT, the slower the query becomes, when using ORDER BY *primary_key* ...
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Why can't I inherit static classes?

I have several classes that do not really need any state. From the organizational point of view, I would like to put them into hierarchy. ...
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How can I create a Set of Sets in Python?

I'm trying to make a set of sets in Python. I can't figure out how to do it. 5 Answers ...
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CharSequence VS String in Java?

Programming in Android, most of the text values are expected in CharSequence . 9 Answers ...