vec_as_index

<a href="https://lifecycle.r-lib.org/articles/stages.html#deprecated"><img src="figures/lifecycle-deprecated.svg?package=vctrs&version=0.6.5" alt="[Deprecated]"></a>
<code>vec_as_index()</code> has been renamed to <code>vec_as_location()</code> and is
deprecated as of vctrs 0.2.2.

internal

Defines new notions of prototype and size that are used to
provide tools for consistent and well-founded type-coercion and
size-recycling, and are in turn connected to ideas of type- and
size-stability useful for analysing function interfaces.

Davis Vaughan

vctrs

Vector Helpers

Hadley Wickham

Lionel Henry

data.table team 

Posit Software, PBC 

vec_as_index function

<dl><dt>i</dt>
<dd>An integer, character or logical vector specifying the
locations or names of the observations to get/set. Specify
<code>TRUE</code> to index all elements (as in <code>x[]</code>), or <code>NULL</code>, <code>FALSE</code> or
<code><a href="/link/integer()?package=vctrs&version=0.6.5" data-mini-rdoc="vctrs::integer()">integer()</a></code> to index none (as in <code>x[NULL]</code>).</dd>
<dt>n</dt>
<dd>A single integer representing the total size of the
object that <code>i</code> is meant to index into.</dd>
<dt>names</dt>
<dd>If <code>i</code> is a character vector, <code>names</code> should be a character
vector that <code>i</code> will be matched against to construct the index. Otherwise,
not used. The default value of <code>NULL</code> will result in an error
if <code>i</code> is a character vector.</dd></dl>

Arguments

<a href='https://lifecycle.r-lib.org/articles/stages.html#deprecated'><img src='figures/lifecycle-deprecated.svg' alt='[Deprecated]' /></a>
<code>vec_as_index()</code> has been renamed to <code>vec_as_location()</code> and is
deprecated as of vctrs 0.2.2.

Convert to an index vector — vec_as_index

<dl>

<dt>i</dt>
<dd>An integer, character or logical vector specifying the
locations or names of the observations to get/set. Specify
<code>TRUE</code> to index all elements (as in <code>x[]</code>), or <code>NULL</code>, <code>FALSE</code> or
<code><a href='https://rdrr.io/r/base/integer.html'>integer()</a></code> to index none (as in <code>x[NULL]</code>).</dd>


<dt>n</dt>
<dd>A single integer representing the total size of the
object that <code>i</code> is meant to index into.</dd>


<dt>names</dt>
<dd>If <code>i</code> is a character vector, <code>names</code> should be a character
vector that <code>i</code> will be matched against to construct the index. Otherwise,
not used. The default value of <code>NULL</code> will result in an error
if <code>i</code> is a character vector.</dd>

</dl>

vec_as_index: Convert to an index vector

Description

Usage

Arguments