generators: Lazy stream generators

In TobCap/lazystreamr: Provides basic functions that handle lazy stream objects

Description

generate a lazy stream

Usage

lhs %..% rhs

liota(n = Inf, start_ = 0L, step_ = 1L)

larith(start_, next_, end_ = Inf)

lrange(start_ = 0L, step_ = 1L, end_ = Inf)

lseq_gen1(x0, f)

lseq_gen2(x0, x1, f)

lseq_gen3(x0, x1, x2, f)

lseq_gen(..., f)

Arguments

lhs	numeric which is converted to integer
rhs	numeric which is converted to integer
n	number of elements
start_	start value
step_	step value
next_	next value
end_	env value
x0, x1, x2	initial values for generating function f
f	a function for lseq_gen
...	arguments for f

Examples

x <- 1 %..% 3
y <- 4 %..% 5
z <- x %++% y # => llist(1, 2, 3, 4, 5)

liota(5) # => llist(0, 1, 2, 3, 4)
larith(0, 2, 10) # => llist(0, 2, 4, 6, 8, 10)
lseq_gen(0, 1, f = function(x, y) x + y) # => fibonacci sequence
lseq_gen1(list(0, 1), f = function(xs) list(xs[[2]], xs[[1]]+ xs[[2]]))

TobCap/lazystreamr documentation built on May 9, 2019, 4:50 p.m.