View source code
Display the source code in std/range.d from which this page was generated on
github.
Improve this page
Quickly fork, edit online, and submit a pull request for this page.
Requires a signed-in GitHub account. This works well for small changes.
If you'd like to make larger changes you may want to consider using
local clone.
Page wiki
View or edit the community-maintained wiki page associated with this page.
Function std.range.radial
Iterates a random-access range starting from a given point and progressively extending left and right from that point. If no initial point is given, iteration starts from the middle of the range. Iteration spans the entire range.
Prototypes
auto radial(Range, I)( Range r, I startingIndex ) if (isRandomAccessRange!(Unqual!Range) && hasLength!(Unqual!Range) && isIntegral!I); auto radial(R)( R r ) if (isRandomAccessRange!(Unqual!R) && hasLength!(Unqual!R));
Example
import std.algorithm : equal; int[] a = [ 1, 2, 3, 4, 5 ]; assert(equal(radial(a), [ 3, 4, 2, 5, 1 ])); a = [ 1, 2, 3, 4 ]; assert(equal(radial(a), [ 2, 3, 1, 4 ]));
Authors
Andrei Alexandrescu, David Simcha, and Jonathan M Davis. Credit for some of the ideas in building this module goes to Leonardo Maffi.