subset-.pmatch_bind: Bind variables to pattern-matched expressions.

In pmatch: Pattern Matching

Description

The bind object itself doesn't do anything. It simply exists in order to define notation for binding variables using the sub-script operator.

Usage

## S3 replacement method for class 'pmatch_bind'
dummy[...] <- value

Arguments

dummy	The bind object. Only used to dispatch to the right subscript operator.
...	Patterns to assign to.
value	Actual values to assign

Examples

bind[x, y] <- c(2,4)
x == 2
y == 4

llist := NIL | CONS(car, cdr : llist)
L <- CONS(1, CONS(2, CONS(3, NIL)))
bind[CONS(first, CONS(second, rest))] <- L
first == 1
second == 2

pmatch documentation built on Oct. 19, 2018, 5:04 p.m.