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<ganjalink>
hello
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<Axioplase>
Chat lut!
<Axioplase>
wondering hwo to use Arg.parse. I jsut want my prog to use a default value or to use one given on the command line (as an anonymous argument)
<Axioplase>
Arg.parse [] (function x -> let fichier0 = ref x) "passez un nom de fichier pour le typer. exemple.mml par défaut.";;
<Axioplase>
argh. well, anyway, you see that I use a ref to store the argument, so that afterwards i can check if that ref is empty, in which case i give it the default value.
<Axioplase>
but the str->unit function I gave to parse seems not to be enjoyed by Ocaml.
<mrvn_>
Axioplase: let fichier0 creates a local binding and you are missing its use (in ....)
<mrvn_>
And, by the way, it would help if one could understand the error message.
<Axioplase>
ho. so, if i declare that ref outside (and above) the function, that anonymous function would still use the right ref? that sounds quite great.
<mrvn_>
let fichier0 = ref None
<mrvn_>
Arg.parse [] (function x -> fichier0 <- Some x)
<mrvn_>
or is it :=?
<Axioplase>
:=
<mrvn_>
I always confuse the two.
<Axioplase>
I jsut use <- with arrays afair
<pango>
and mutables
<Axioplase>
indeed.
<pango>
type 'a ref = { mutable contents: 'a }
<pango>
x := 3 <==> x.contents <- 3
<Axioplase>
yes. that is.
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<ganjalink>
++
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