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44 lines
1005 B
Plaintext
44 lines
1005 B
Plaintext
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$ fq -ni
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null> help
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Type expression to evaluate
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\t Completion
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Up/Down History
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^C Interrupt execution
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... | repl Start a new REPL
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^D Exit REPL
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null> help | abc
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error: expr: function not defined: abc/0
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null> help | 1
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error: help must be alone or last in pipeline. ex: help(length) or ... | help
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null> abc | help
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error: expr: function not defined: abc/0
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null> "a"+1 | help
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error: cannot add: string ("a") and number (1)
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"value help"
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[]
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null> help(length)
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length: Length of string, array, object, etc
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- For string number of unicode codepoints
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- For array number of elements in array
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- For object number of key-value pairs
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- For null zero
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- For number the number itself
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- For boolean is an error
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Examples:
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> [1,2,3] | length
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3
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> "abc" | length
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3
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> {"a":1,"b":2} | length
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2
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> null | length
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0
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> 123 | length
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123
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> true | length
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error: length cannot be applied to: boolean (true)
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null> help(1;2)
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error: expr: help must be last in pipeline. ex: help(length) or ... | help
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null> ^D
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