fold on empty range
Rumbu
rumbu at rumbu.ro
Wed Feb 17 11:38:45 UTC 2021
On Wednesday, 17 February 2021 at 10:15:10 UTC, Mitacha wrote:
> it'll use empty string as first element in range.
>
> BTW perheps you could use `joinner` instead of this `fold` to
> join values with ",".
Thanks for that. I thought to joiner too, but it doesn't work. I
need fold to take a list of strings and concatenate them.
Basically I read comma separated keywords from various sources
and i want to iterate through all of them. If you know other
method without the involved allocation of fold...
.map!(a => a.hit.stripLeft("[").strip("]")) //"k1,k2",
"k3,k4" ...
.fold!((a, b) => a ~ "," ~ b)("")
//"k1,k2,k3,k4,..."
.splitter(',') //"k1", "k2",
"k3", "k4", ...,
.map!(a => a.stripLeft("\" '").strip("\" '"))
.filter!(a => a.length && !a.any!(b => b == ' ' || b == '\\' || b
== '/' || b == ':'))
.array
.sort
.uniq;
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