[ library(regex) | Reference Manual | Alphabetic Index ]
compile_pattern(+Pattern, +Options, -CompiledPattern)
Precompile a pattern for repeated use
- A string
- List of atoms
- Output: a compiled pattern handle
All matching predicates in this library accept either a regular
expression in string form, or a precompiled regular expression.
The matching predicates will execute faster if invoked with a
precompiled pattern instead of the string. Whenever a pattern
needs to be matched more than once, it will typically be more
efficient to work with a precompiled pattern.
Options is a (possibly empty) list of atomic option names,
as described in the library(regex) page. The options give here
should be the same as the ones given to the matching-predicates later.
The space consumed by the compiled pattern will be automatically
reclaimed on failure, or on garbage collection when no longer needed.
Modes and Determinism
- compile_pattern(+, +, -) is det
?- compile_pattern("ab+a", , C),
match(C, "bbabbbaab", , M1),
match(C, "abacus", , M2).
C = 'HANDLE'(16'00025c60)
M1 = "abbba"
M2 = "aba"
library(regex), match / 2, match / 3, match / 4, matchsub / 4, matchall / 4