cheat sheets.

Cheat Sheet Title: [ no_spaces_alphanumeric_only ]

Cheat Sheet:
# 'cheat assertions' for the rest assert_equal(expected, actual, message=nil) Passes if expected == +actual. Note that the ordering of arguments is important, since a helpful error message is generated when this one fails that tells you the values of expected and actual. Example: assert_equal 'MY STRING', 'my string'.upcase

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