selectionEngine: Create an instance of the CSS Selection Engine

In omegahat/RCSS: Facilities for reading and working with CSS files in R

Description

A selection engine is used in getCSSRules to match a node to the CSS rules. That function creates its own selection engine if none is provided. However, if one is calling getCSSRules many times for the same CSS document, it is more efficient to creat the engine just once and pass it in each call to getCSSRules. This selectionEngine function creates a selection engine for this purpose.

Usage

selectionEngine()

Value

A reference to the C-level selection engine instance.

Author(s)

Duncan Temple Lang

See Also

getCSSRules

Examples

## Not run: 
eng = selectionEngine()
lapply(nodes, getCSSRules, eng = eng)

## End(Not run)

omegahat/RCSS documentation built on May 24, 2019, 1:52 p.m.