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How do I check that a number is float or integer?
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How to comment out a block of Python code in Vim
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How to get the nth occurrence in a string?
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How can I sort arrays and data in PHP?
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Creating an R dataframe row-by-row
...code in R.
If you can, allocate your entire data.frame up front:
N <- 1e4 # total number of rows to preallocate--possibly an overestimate
DF <- data.frame(num=rep(NA, N), txt=rep("", N), # as many cols as you need
stringsAsFactors=FALSE) # you don't know levels y...
How to escape braces (curly brackets) in a format string in .NET
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It is more efficient to use if-return-return or if-else-return?
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Since the return statement terminates the execution of the current function, the two forms are e...
Efficiently updating database using SQLAlchemy ORM
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SQLAlchemy's ORM is meant to be used together with the SQL layer, not hide it. But you do have...
How to get random value out of an array?
I have an array called $ran = array(1,2,3,4);
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How to tell which commit a tag points to in Git?
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