https://issues.dlang.org/show_bug.cgi?id=17204

          Issue ID: 17204
           Summary: std.functional: gte (greater than or equals), lte
                    (less than or equals) and ne (not equals)
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: phobos
          Assignee: nobody@puremagic.com
          Reporter: greeenify@gmail.com

While not very common as lowerThan and easy to do it on ones own, the existence of lessThan, greaterThan, equalTo nearly begs the question on why lte (or lessOrEqual) and gte (or greaterOrEqual) and (notEqualsTo) aren't on the list - especially because the underlying, private implementation `safeOp` supports them.

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