[phobos] [D-Programming-Language/phobos] 6ba693: replace some enforces with contracts

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 6ba693f10a450aeffc430c226865ea2279b165d5
      https://github.com/D-Programming-Language/phobos/commit/6ba693f10a450aeffc430c226865ea2279b165d5
  Author: John Colvin <john.loughran.colvin at gmail.com>
  Date:   2015-03-04 (Wed, 04 Mar 2015)

  Changed paths:
    M std/range/package.d

  Log Message:
  -----------
  replace some enforces with contracts

added tests

contracts for stride and iota

contracts for stride and iota


  Commit: 282d4c84431f8065049a90e0727520033b5c4790
      https://github.com/D-Programming-Language/phobos/commit/282d4c84431f8065049a90e0727520033b5c4790
  Author: monarch dodra <monarchdodra at gmail.com>
  Date:   2015-03-12 (Thu, 12 Mar 2015)

  Changed paths:
    M std/range/package.d

  Log Message:
  -----------
  Merge pull request #3036 from John-Colvin/patch-10

std.range: replace some enforces with contracts


Compare: https://github.com/D-Programming-Language/phobos/compare/2679e447739c...282d4c84431f