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Using sed and grep/egrep to search and replace
I am using egrep -R followed by a regular expression containing about 10 unions, so like:
.jpg | .png | .gif etc. This works well, now I would like to replace all strings found with .bmp
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Does static constexpr variable inside a function make sense?
If I have a variable inside a function (say, a large array), does it make sense to declare it both static and constexpr ? constexpr guarantees that the array is created at compile time, so would the static be useless?
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How to determine a user's IP address in node
How can I determine the IP address of a given request from within a controller? For example (in express):
19 Answers
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MySQL SELECT WHERE datetime matches day (and not necessarily time)
I have a table which contains a datetime column. I wish to return all records of a given day regardless of the time. Or in other words, if my table only contained the following 4 records, then only the 2nd and 3rd would be returned if I limit to 2012-12-25.
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DbArithmeticExpression arguments must have a numeric common type
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3 Answers
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How to fix the aspect ratio in ggplot?
I'm trying to resize a plot to fit into my document, but I'm having difficulties getting the plotted diagram do be a square.
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How to shorten my conditional statements
I have a very long conditional statement like the following:
15 Answers
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Are loops really faster in reverse?
I've heard this quite a few times. Are JavaScript loops really faster when counting backward? If so, why? I've seen a few test suite examples showing that reversed loops are quicker, but I can't find any explanation as to why!
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How can I define a composite primary key in SQL?
How can I define a composite primary key consisting of two fields in SQL?
3 Answers
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PHP Get all subdirectories of a given directory
How can I get all sub-directories of a given directory without files, . (current directory) or .. (parent directory)
and then use each directory in a function?
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