https://issues.dlang.org/show_bug.cgi?id=24081

          Issue ID: 24081
           Summary: [Function countUntil] countUntil is a terrible name
           Product: D
           Version: D2
          Hardware: All
               URL: http://dlang.org/library/std/algorithm/searching.html
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: phobos
          Assignee: nobody@puremagic.com
          Reporter: crazymonkyyy@gmail.com

its been like a dozen times I stared at the list of functions wanting this function just to be called indexOf

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