allNA

A vector is empty if <code>all(is.na(x))</code> with a
special case for <code>length(x) == 0</code>.

Provides utility functions that are simply, frequently used,
but may require higher performance that what can be obtained from base R.
Incidentally provides support for 'reverse geocoding', such as matching a point
with its nearest neighbour in another array. Used as a complement to package
'hutils' by sacrificing compilation or installation time for higher running
speeds. The name is a portmanteau of the author and 'Rcpp'.

Hugh Parsonage

hutilscpp

Miscellaneous Functions in C++

Simon Urbanek

allNA function

<dl><dt>x</dt>
<dd>A vector. Only atomic vectors are supported.</dd>
<dt>expected</dt>
<dd><code>TRUE | FALSE</code> Whether it is expected that <code>x</code> is empty.
If <code>TRUE</code> the function will be marginally faster if <code>x</code> is empty but
likely slower if not.</dd>
<dt>len0</dt>
<dd>The result if <code>length(x) == 0</code>.</dd>
<dt>nThread</dt>
<dd>Number of threads to use (only applicable if <code>expected</code> is <code>TRUE</code>)</dd></dl>

Arguments

Is a vector empty? — allNA

<dl>

<dt>x</dt>
<dd>A vector. Only atomic vectors are supported.</dd>


<dt>expected</dt>
<dd><code>TRUE | FALSE</code> Whether it is expected that <code>x</code> is empty.
If <code>TRUE</code> the function will be marginally faster if <code>x</code> is empty but
likely slower if not.</dd>


<dt>len0</dt>
<dd>The result if <code>length(x) == 0</code>.</dd>


<dt>nThread</dt>
<dd>Number of threads to use (only applicable if <code>expected</code> is <code>TRUE</code>)</dd>

</dl>

allNA: Is a vector empty?

Description

Usage

Arguments

Examples