all
For filters.
Test if every element of the input fulfills a predicate expression.
Command Type
built-in
Signature
> all {flags} (predicate)
Parameters
predicate: Row condition or closure that evaluates to a boolean.
Input/output types:
| input | output |
|---|---|
| list<any> | bool |
Examples
Check if a list contains only true values.
> [false true true false] | all {}
falseCheck if each row’s status is the string ‘UP’.
> [[status]; [UP] [UP]] | all {|el| $el.status == UP }
trueCheck that each item is a string.
> [foo bar 2 baz] | all ($it | describe) == 'string'
falseCheck that all values are equal to twice their index.
> [0 2 4 6] | enumerate | all {|i| $i.item == $i.index * 2 }
trueCheck that all of the values are even, using a stored closure.
> let cond = {|el| ($el mod 2) == 0 }; [2 4 6 8] | all $cond
truePorted from nushell/nushell.github.io. Copyright (c) 2021 Nushell Project. MIT License.