purrr: every – R documentation

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every

Do every, some, or none of the elements of a list satisfy a predicate?

Do every, some, or none of the elements of a list satisfy a predicate?

every(.x, .p, ...)

some(.x, .p, ...)

none(.x, .p, ...)

`.x`	A list or atomic vector.
`.p`	A predicate function to apply on each element of `.x`. `some()` returns `TRUE` when `.p` is `TRUE` for at least one element. `every()` returns `TRUE` when `.p` is `TRUE` for all elements. `none()` returns `TRUE` when `.p` is `FALSE` for all elements.'
`...`	Additional arguments passed on to `.p`.

A logical vector of length 1.

y <- list(0:10, 5.5)
y %>% every(is.numeric)
y %>% every(is.integer)
y %>% some(is.integer)
y %>% none(is.character)

Functional Programming Tools

v0.3.4

GPL-3 | file LICENSE

Authors

Lionel Henry [aut, cre], Hadley Wickham [aut], RStudio [cph, fnd]

Initial release