jashkenas--coffeescript/test/test_pattern_matching.coffee

96 lines
1.1 KiB
CoffeeScript

a: -1
b: -2
[a, b]: [b, a]
ok a is -2
ok b is -1
func: ->
[a, b]: [b, a]
ok func().join(' ') is '-1 -2'
noop: ->
noop [a,b]: [c,d]: [1,2]
ok a is 1 and b is 2
arr: [1, 2, 3]
[a, b, c]: arr
ok a is 1
ok b is 2
ok c is 3
[x,y...,z]: [1,2,3,4,5]
ok x is 1
ok y.length is 3
ok z is 5
[x, [y, mids..., last], z..., end]: [1, [10, 20, 30, 40], 2,3,4, 5]
ok x is 1
ok y is 10
ok mids.length is 2 and mids[1] is 30
ok last is 40
ok z.length is 3 and z[2] is 4
ok end is 5
obj: {x: 10, y: 20, z: 30}
{x: a, y: b, z: c}: obj
ok a is 10
ok b is 20
ok c is 30
person: {
name: "Bob"
family: {
brother: {
addresses: [
"first"
{
street: "101 Deercreek Ln."
city: "Moquasset NY, 10021"
}
]
}
}
}
{name: a, family: {brother: {addresses: [one, {city: b}]}}}: person
ok a is "Bob"
ok b is "Moquasset NY, 10021"
test: {
person: {
address: [
"------"
"Street 101"
"Apt 101"
"City 101"
]
}
}
{person: {address: [ignore, addr...]}}: test
ok addr.join(', ') is "Street 101, Apt 101, City 101"
[a, b]: if true then [2, 1] else [1, 2]
ok a is 2
ok b is 1