mirror of
https://github.com/chubin/cheat.sheets
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43 lines
842 B
Plaintext
43 lines
842 B
Plaintext
// sole member of the Unit type (like C/Java void).
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() //(empty parens)
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// tuple literal
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// This example would be a Tuple3
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(1,2,3)
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// tuple sugar
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// This example would be a Tuple2
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(1 -> 2) //same as
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(1, 2)
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// destructuring bind: tuple unpacking via pattern matching.
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var (x,y,z) = (1,2,3)
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// hidden error: each assigned to the entire tuple.
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// BAD
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var x,y,z = (1,2,3)
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// list (immutable).
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var xs = List(1,2,3)
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// paren indexing. (slides)
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// more on it: https://www.slideshare.net/Odersky/fosdem-2009-1013261/27
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xs(2)
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// cons.
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1 :: List(2,3)
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// map (Immutable)
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Map(1 -> 'a', 2 -> 'b', 3 -> 'c') //same as
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Map((1, 'a'), (2, 'b'), (3, 'c'))
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// range
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// accepts start, end and step parameters
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Range(1, 5) //returns Range(1,2,3,4,5)
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Range(1, 10, 2) //returns Range(1,3,5,7,9)
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// range sugar.
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1 to 5 // same as
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1 until 6
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1 to 10 by 2
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