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https://github.com/go-sylixos/elvish.git
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102 lines
2.1 KiB
Plaintext
102 lines
2.1 KiB
Plaintext
# ```elvish
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# <s $string... # less
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# <=s $string... # less or equal
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# ==s $string... # equal
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# !=s $string... # not equal
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# >s $string... # greater
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# >=s $string... # greater or equal
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# ```
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#
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# String comparisons. They behave similarly to their number counterparts when
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# given multiple arguments. Examples:
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#
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# ```elvish-transcript
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# ~> >s lorem ipsum
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# ▶ $true
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# ~> ==s 1 1.0
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# ▶ $false
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# ~> >s 8 12
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# ▶ $true
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# ```
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#doc:id str-cmp
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#doc:fn <s <=s ==s !=s >s >=s
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# Output the width of `$string` when displayed on the terminal. Examples:
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#
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# ```elvish-transcript
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# ~> wcswidth a
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# ▶ 1
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# ~> wcswidth lorem
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# ▶ 5
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# ~> wcswidth 你好，世界
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# ▶ 10
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# ```
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fn wcswidth {|string| }
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# Convert arguments to string values.
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#
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# ```elvish-transcript
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# ~> to-string foo [a] [&k=v]
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# ▶ foo
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# ▶ '[a]'
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# ▶ '[&k=v]'
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# ```
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fn to-string {|@value| }
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# Outputs a string for each `$number` written in `$base`. The `$base` must be
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# between 2 and 36, inclusive. Examples:
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#
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# ```elvish-transcript
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# ~> base 2 1 3 4 16 255
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# ▶ 1
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# ▶ 11
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# ▶ 100
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# ▶ 10000
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# ▶ 11111111
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# ~> base 16 1 3 4 16 255
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# ▶ 1
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# ▶ 3
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# ▶ 4
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# ▶ 10
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# ▶ ff
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# ```
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fn base {|base @number| }
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# For each [value input](#value-inputs), calls `$f` with the input followed by
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# all its fields. A [`break`](./builtin.html#break) command will cause `eawk`
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# to stop processing inputs. A [`continue`](./builtin.html#continue) command
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# will exit $f, but is ignored by `eawk`.
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#
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# It should behave the same as the following functions:
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#
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# ```elvish
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# fn eawk {|f @rest|
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# each {|line|
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# var @fields = (re:split '[ \t]+' (str:trim $line " \t"))
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# $f $line $@fields
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# } $@rest
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# }
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# ```
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#
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# This command allows you to write code very similar to `awk` scripts using
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# anonymous functions. Example:
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#
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# ```elvish-transcript
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# ~> echo " lorem ipsum\n1 2" | awk '{ print $1 }'
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# lorem
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# 1
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# ~> echo " lorem ipsum\n1 2" | eawk {|line a b| put $a }
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# ▶ lorem
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# ▶ 1
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# ```
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#
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# **Note**: Since Elvish allows variable names consisting solely of digits, you
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# can also do the following:
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#
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# ```elvish-transcript
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# ~> echo " lorem ipsum\n1 2" | eawk {|0 1 2| put $1 }
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# ▶ lorem
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# ▶ 1
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# ```
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fn eawk {|f inputs?| }
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