tokens_xptr {quanteda}

Methods for tokens_xptr objects

Description

Methods for creating and testing for tokens_xptr objects, which are tokens objects containing pointers to memory locations that can be passed by reference for efficient processing in ⁠tokens_*()⁠ functions that modify them, or for constructing a document-feature matrix without requiring a deep copy to be passed to dfm().

is.tokens_xptr() tests whether an object is of class tokens_xtpr.

as.tokens_xptr() coerces a tokens object to an external pointer-based tokens object, or returns a deep copy of a tokens_xtpr when x is already a tokens_xtpr object.

Usage

is.tokens_xptr(x)

as.tokens_xptr(x)

## S3 method for class 'tokens'
as.tokens_xptr(x)

## S3 method for class 'tokens_xptr'
as.tokens_xptr(x)

Arguments

x

a tokens object to convert or a tokens_xptr class object to deep copy.

Value

is.tokens_xptr() returns TRUE if the object is a external pointer-based tokens object, FALSE otherwise.

as.tokens_xptr() returns a (deep copy of a) tokens_xtpr class object.