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Meaning of “[: too many arguments” error from if [] (square brackets)

I couldn't find any one simple straightforward resource spelling out the meaning of and fix for the following BASH shell error, so I'm posting what I found after researching it. ...
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How can you debug a CORS request with cURL?

How can you debug CORS requests using cURL? So far I couldn't find any way to "simulate" the preflight request . 4 Answers ...
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How can I create a copy of an object in Python?

I would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that. ...
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How does _gaq.push(['_trackPageLoadTime']) work?

How does the Google Analytics Site Speed feature, _gaq.push(['_trackPageLoadTime']) , work? Is there any documentation about how it works? ...
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Making a Location object in Android with latitude and longitude values

I have a program in which latitude and longitude values of a location are stored in a database, which I download. 3 Answer...
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How can I use a file in a command and redirect output to the same file without truncating it?

Basically I want to take as input text from a file, remove a line from that file, and send the output back to the same file. Something along these lines if that makes it any clearer. ...
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npm install from Git in a specific version

Assumed that I have written a module for Node.js which I would like to keep private. I know that I can (should) add the line: ...
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HashSet versus Dictionary w.r.t searching time to find if an item exists

Whose .Contains method will return quicker? 5 Answers 5 ...
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Python pandas Filtering out nan from a data selection of a column of strings

Without using groupby how would I filter out data without NaN ? 4 Answers 4 ...
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How do I download a tarball from GitHub using cURL?

I am trying to download a tarball from GitHub using cURL , but it does not seem to be redirecting: 5 Answers ...