I'm trying to build a Haskell CLI that can either read in strings from stdin or from arguments like so:
cat colors-multi-line | colorshift -d 10
colorshift -d 10 "#FFFFFF"
How would I accomplish this?
Reading strings from stdin or argument in Haskell CLI
172 Views Asked by Carolyn Knight-Serrano At
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There are several libraries to handle CLI argument parsing.
optparse-applicativeis the one with which I'm most familiar.getLineandgetContentsinPreluderead fromSTDIN.