Ruby cheatsheet

Word-wrapping in StackEdit

__foo__ = "This foo sentence contains many foo instances, for example: foo, foo, foo."

* Match a single symbol: `foo.match /./ # => #<MatchData "T">`
* Match the first-found word character symbol: `foo.match /\w/ => #<MatchData "T">`
* Extract all symbols of a string: `foo.scan /./ # => ["T",
 "h",
 "i",
 "s",
 " ",
 "f",
 "o",
 "o",
 " ",
 "s",
 "e",
 "n",
 "t",
 "e",
 "n",
 "c",
 "e",
 " ",
 "c",
 "o",
 "n",
 "t",
 "a",
 "i",
 "n",
 "s",
 " ",
 "m",
 "a",
 "n",
 "y",
 " ",
 "f",
 "o",
 "o",
 " ",
 "i",
 "n",
 "s",
 "t",
 "a",
 "n",
 "c",
 "e",
 "s",
 ",",
 " ",
 "f",
 "o",
 "r",
 " ",
 "e",
 "x",
 "a",
 "m",
 "p",
 "l",
 "e",
 ":",
 " ",
 "f",
 "o",
 "o",
 ",",
 " ",
 "f",
 "o",
 "o",
 ",",
 " ",
 "f",
 "o",
 "o",
 "."] `
* Extract n-member group of symbols - e.g. groups of 3 symbols `foo.scan /.../ # => ["Thi",
 "s f",
 "oo ",
 "sen",
 "ten",
 "ce ",
 "con",
 "tai",
 "ns ",
 "man",
 "y f",
 "oo ",
 "ins",
 "tan",
 "ces",
 ", f",
 "or ",
 "exa",
 "mpl",
 "e: ",
 "foo",
 ", f",
 "oo,",
 " fo"]`
* Match the whole string: `foo.match /.+/ # => #<MatchData "This foo sentence contains many foo instances, for example: foo, foo, foo.">`
`foo.match /.*/ # => #<MatchData "This foo sentence contains many foo instances, for example: foo, foo, foo.">`


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