... and, of course, the original premise is false. apply() type statements
**are** loops at the interpreter level and are typically not appreciably
faster -- sometimes even a bit slower -- than explicit for() loops. Their
chief advantage is adherence to a functional programming paradigm that for
ma
Eric's approach seems reasonable to me, and I agree that it's probably not the
use of a "for" loop that makes the original version slow. As Eric mentioned,
there are lots of unnecessary things happening in the loop.
For example, list.files() was called twice inside the loop, which is
unnecessar
Hi Stephen,
I am not sure that the "for loop" is the source of slowness.
You seem to be doing a lot of unnecessary work each time through the loop.
e.g. no need to check if it's the last file, just move that section outside
of the loop.
It will be executed when the loop finishes. As it is you are c
Dear All,
I have a following for-loop code which is basically intended to read in
many excel files (each file has many columns and rows) in a directory and
extract the some rows and columns out of each file and then combine them
together into a dataframe. I use for loop which can do the work but q
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