List environments are environments that have list-like properties.  For instance, the elements of a list environment are ordered and can be accessed and iterated over using index subsetting, e.g. 'x <- listenv(a = 1, b = 2); for (i in seq_along(x)) x[[i]] <- x[[i]] ^ 2; y <- as.list(x)'.

Environments Behaving (Almost) as Lists

package-ubuntu-20.04-r-4.0.5#cran#listenv-0.8.0

<table summary="R argblock">
<tr valign="top">
<td><code>x</code></td>
<td>
<p>A list environment.</p>
</td>
</tr>
<tr valign="top">
<td><code>name</code></td>
<td>
<p>The name or index of the element to retrieve.</p>
</td>
</tr>
</table>

<p>The value of an element or <code>NULL</code> if the element does not exist.
</p>

package-ubuntu-20.04-r-4.0.5#cran#listenv-0.8.0#docs#cash-.listenv

cash-.listenv

Description

Usage

Arguments

Value

listenv

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`x`	A list environment.
`name`	The name or index of the element to retrieve.