4 ms·
There are (some) guards available though? You could rewrite your example as: case x { n if x < 0 -> ... n if x > 10 -> ... n if x <= 10 -
by WJW 10mo ago
There are (some) guards available though? You could rewrite your example as:
case x {
n if x < 0 -> ...
n if x > 10 -> ...
n if x <= 10 -> ...
}
Guards are a bit limited in that they cannot contain function calls, but that's a problem of the BEAM and not something Gleam could control.
- tymscar 10mo agoYou most likely asked an AI for this. They always think there is an `if` keyword in case statements in Gleam. There isn't one, sadly. EDIT: I am wrong. Apparently there are, but it's a bit of a strange thing where they can only be used as clauses in `if` statements, and without doing any calculations.
- WJW 10mo agoThere is though? https://tour.gleam.run/flow-control/guards/ https://tour.gleam.run/flow-control/guards/
- ngruhn 10mo agoAh right, I remember now. > Guards are a bit limited in that they cannot contain function calls, I feel like that's not a small sacrifice. > but that's a problem of the BEAM and not something Gleam could control. Could Gleam desugar to a case expression like I wrote above?
- zelphirkalt 10mo agoGuards also eliminate checking for whether a pattern matching is comprehensive. Or do I remember wrong and the language does not check it at all?