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jashkenas--coffeescript/test/test_splats.coffee

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CoffeeScript

func: (first, second, rest...) ->
rest.join ' '
result: func 1, 2, 3, 4, 5
ok result is "3 4 5"
gold: silver: bronze: the_field: last: null
medalists: (first, second, third, rest..., unlucky) ->
gold: first
silver: second
bronze: third
the_field: rest.concat([last])
last: unlucky
contenders: [
"Michael Phelps"
"Liu Xiang"
"Yao Ming"
"Allyson Felix"
"Shawn Johnson"
"Roman Sebrle"
"Guo Jingjing"
"Tyson Gay"
"Asafa Powell"
"Usain Bolt"
]
medalists "Mighty Mouse", contenders...
ok gold is "Mighty Mouse"
ok silver is "Michael Phelps"
ok bronze is "Liu Xiang"
ok last is "Usain Bolt"
ok the_field.length is 8
contenders.reverse()
medalists contenders[0...2]..., "Mighty Mouse", contenders[2...contenders.length]...
ok gold is "Usain Bolt"
ok silver is "Asafa Powell"
ok bronze is "Mighty Mouse"
ok last is "Michael Phelps"
ok the_field.length is 8
medalists contenders..., 'Tim', 'Moe', 'Jim'
ok last is 'Jim'
obj: {
name: 'moe'
accessor: (args...) ->
[@name].concat(args).join(' ')
getNames: ->
args: ['jane', 'ted']
@accessor(args...)
}
ok obj.getNames() is 'moe jane ted'
crowd: [
contenders...
"Mighty Mouse"
]
bests: [
"Mighty Mouse"
contenders[0..3]...
]
ok crowd[0] is contenders[0]
ok crowd[10] is "Mighty Mouse"
ok bests[1] is contenders[0]
ok bests[4] is contenders[3]
# Finally, splats with super() within classes.
class Parent
meth: (args...) ->
args
class Child extends Parent
meth: ->
nums: [3, 2, 1]
super nums...
ok (new Child()).meth().join(' ') is '3 2 1'
# Functions with splats being called with too few arguments.
pen: null
method: (first, variable..., penultimate, ultimate) ->
pen: penultimate
method 1, 2, 3, 4, 5, 6, 7, 8, 9
ok pen is 8
method 1, 2, 3
ok pen is 2
method 1, 2
ok pen is 2