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When to use single quotes, double quotes, and backticks in MySQL
I am trying to learn the best way to write queries. I also understand the importance of being consistent. Until now, I have randomly used single quotes, double quotes, and backticks without any real thought.
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Why doesn't println! work in Rust unit tests?
I've implemented the following method and unit test:
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What is the difference between ndarray and array in numpy?
...erence between ndarray and array in Numpy? And where can I find the implementations in the numpy source code?
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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
Why is it that scanf() needs the l in " %lf " when reading a double , when printf() can use " %f " regardless of whether its argument is a double or a float ?
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Linux, Why can't I write even though I have group permissions?
I want to create a file in a directory owned by the staff group which I am a member of. Why can I not do this?
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How persistent is localStorage?
I'm depending heavily on localStorage for a plugin I'm writing. All the user settings are stored in it. Some settings require the user the write regex'es and they would be sad if their regex rules are gone at some point.
So now I am wondering just how persistent the localStorage is.
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Drawing an image from a data URL to a canvas
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Change default timeout for mocha
If we have a unit test file my-spec.js and running with mocha:
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How can I create a unique constraint on my column (SQL Server 2008 R2)?
I have SQL Server 2008 R2 and I want to set a unique column.
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What does the “at” (@) symbol do in Python?
I'm looking at some Python code which used the @ symbol, but I have no idea what it does. I also do not know what to search for as searching Python docs or Google does not return relevant results when the @ symbol is included.
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