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Last data update: 2014.03.03

R: Producer class to generate (numeric) sequences

Seq	R Documentation

Producer class to generate (numeric) sequences

Description

A Producer-class to generate a sequence (possibly long) of numbers.

Usage

Seq(from = 1L, to=.Machine$integer.max, by = 1L, yieldSize=1L,
    ...)

Arguments

`from`	A starting value of any type (e.g., `integer`, `numeric` supported by `base::seq`.
`to`	An ending value, typically of the same type as `from`.
`by`	A value, typically of the same class as `from`, indicating the increment between successive numbers in the sequence. `by = 0` can create an infinite stream.
`yieldSize`	A `integer(1)` indicating the length of the output sequence each time `yield()` is invoked.
`...`	Additional arguments passed to `Producer`.

Constructors

Use Seq to construct instances of this class.

Methods

See Producer Methods.

Internal Class Fields and Methods

Internal fields of this class are are described with getRefClass("Seq")$fields.

Internal methods of this class are described with getRefClass("Seq")$methods() and getRefClass("Seq")$help().

Author(s)

Martin Morgan mtmorgan@fhcrc.org

Examples

s <- Seq(1, 10, yieldSize=5)
while(length(y <- yield(s)))
    print(y)

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

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Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(Streamer)
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/Streamer/Seq-class.Rd_%03d_medium.png", width=480, height=480)
> ### Name: Seq
> ### Title: Producer class to generate (numeric) sequences
> ### Aliases: Seq-class Seq
> ### Keywords: classes
> 
> ### ** Examples
> 
> s <- Seq(1, 10, yieldSize=5)
> while(length(y <- yield(s)))
+     print(y)
[1] 1 2 3 4 5
[1]  6  7  8  9 10
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>