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<
thelema>
hcarty: probably not so generally useful
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<
thelema>
let map_accum k v m = try Map.modify k (fun lst -> v :: lst) m with Not_found -> Map.add k v m
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thelema>
hcarty: it might be amusing to have auto-vivifying maps (like perl has)
<
thelema>
i.e. some default value is returned (and inserted) instead of Not_found
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<
flux>
a variant of Map with default values would definitely be useful
<
flux>
it has not been once or twice when I've made for example a map of sets
<
flux>
and always I need to check that if there is no element, return an empty set..
<
flux>
(note that such a general facility would need to take a function to accommodate mutable values)
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<
thelema>
hashtbl would take a function, map just a value
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<
flux>
nothing stops one from putting mutable values into a map, and that can be useful at times
<
flux>
(of course, you wouldn't put mutable keys in either of them)
<
flux>
for example if you need an associative containre for your mutable values, but you also need to have min_binding
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<
yezariaely>
anyone can give me a hint for more userfriendly error messages when running a ocamlyacc-built parser?
<
yezariaely>
at the moment I can print the error line and "syntax error"
<
yezariaely>
but this does not help me during the debugging sessions ;)
<
f[x]>
use OCAMLRUNPARAM=p
<
yezariaely>
f[x]: thx, I will have a look at that
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