Add strictly parameter to between function

[romagnolid]

Let users specify if a number is strictly between range or not. Default to FALSE for backward compatibility.

> between(1:5, 2, 4)
[1] FALSE  TRUE  TRUE  TRUE FALSE
> between(1:5, 2, 4, strictly = TRUE)
[1] FALSE FALSE  TRUE FALSE FALSE

[romainfrancois]

I'm not sure this is the right approach, a logical argument like strictly only covers 2 of the 4 possible cases.

[romagnolid]

Hello @romainfrancois, do you think something like include = c("none", "left", "right", "both") would be more useful? Sort of a merge of include.lower and right parameters from cut.

[romainfrancois]

I'm going to close this now and defer the conversation to tidyverse/funs#26

please follow up there.

[lock]

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