116 lines
2.1 KiB
VimL
116 lines
2.1 KiB
VimL
vim9script
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# Vim 9 lambda expressions
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var Foo: func
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var expr = 0
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# without return type
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Foo = () => expr
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Foo = (_) => expr
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Foo = (x) => expr
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Foo = (...y) => expr
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Foo = (_, ...y) => expr
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Foo = (x, ...y) => expr
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Foo = (x, y) => expr
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Foo = (_: number) => expr
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Foo = (x: number) => expr
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Foo = (...y: list<number>) => expr
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Foo = (_: number, ...y: list<number>) => expr
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Foo = (x: number, ...y: list<number>) => expr
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Foo = (x: number, y: number) => expr
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# with return type
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Foo = (): number => expr
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Foo = (_): number => expr
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Foo = (x): number => expr
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Foo = (...y): number => expr
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Foo = (_, ...y): number => expr
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Foo = (x, ...y): number => expr
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Foo = (x, y): number => expr
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Foo = (_: number): number => expr
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Foo = (x: number): number => expr
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Foo = (...y: list<number>): number => expr
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Foo = (_: number, ...y: list<number>): number => expr
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Foo = (x: number, ...y: list<number>): number => expr
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Foo = (x: number, y: number): number => expr
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# post operator comments
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Foo = () => # comment
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expr
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Foo = () =>
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# comment
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expr
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Foo = () =>
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# comment
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expr
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# line continuations
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Foo = (x: string,
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\ y: number,
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\ z: bool): number => expr
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# FIXME
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Foo = (x: string,
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\ y: number,
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\ z: bool): number
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\ => expr
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# funcref call
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echo (() => 42)()
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echo ((x: string): number => 42)("foo")
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# :help vim9-lambda
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var list = [1, 2, 3]
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echo filter(list, (k, v) =>
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v > 0)
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echo filter(list, (k,
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\ v)
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\ => v > 0)
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var Callback = (..._) => 'anything'
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echo Callback(1, 2, 3) # displays "anything"
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var Lambda = (arg) => {
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g:was_called = 'yes'
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return expr
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}
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var count = 0
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var timer = timer_start(500, (_) => {
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count += 1
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echom 'Handler called ' .. count
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}, {repeat: 3})
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var dict = {}
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var d = mapnew(dict, (k, v): string => {
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return 'value'
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})
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# Issue #15970 (vim9: Restore and extend the recognition of Enum body items)
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def Op(): func(func(number, number): number): func(number, Digit): number
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return (F: func(number, number): number) =>
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(x: number, y: Digit): number => F(x, y.value)
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enddef ####################### ^ vimCommand?
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