d-option ~master (2022-05-11T02:12:44.8220246)

filter

option
Undocumented in source. Be warned that the author may not have intended to support it.
pure nothrow
Option!T
filter
(
alias pred
T
)
(
Option!T o
)
if (
is(typeof(unaryFun!pred(o.get)) : bool)
)

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