use_first

<p>See <code><a rd-options="assertive.base" href="/link/use_first?package=assertive&version=0.3-6&to=assertive.base" data-mini-rdoc="assertive.base::use_first">use_first</a></code>.</p>

Lots of predicates (is_* functions) to check the state of your
variables, and assertions (assert_* functions) to throw errors if they
aren't in the right form.

Richard Cotton

assertive

Readable Check Functions to Ensure Code Integrity

use_first function

<p>See <code><a rd-options='assertive.base' href='use_first'>use_first</a></code>.</p>

use_first: Only use the first element of a vector

Description

Arguments