sfsmisc: funEnv – R documentation

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funEnv

List-like Environment of Functions (and More)

Description

Construct a “list”, really an environment typically of functions and optionally other R objects, where the functions and formulas all all share the same environment. Consequently, the functions may call each other.

On technical level, this is just a simple wrapper around list2env().

Usage

funEnv(..., envir = NULL, parent = parent.frame(),
       hash = (...length() > 100), size = max(29L, ...length()))

Arguments

`...`	an arbitrary named “list” of R objects, typically including several `function`s.
`envir`	an `environment` or `NULL`.
`parent`	(for the case `envir = NULL`): a parent frame aka enclosing environment, see `new.env` and `list2env`.
`hash, size`	(for the case `envir = NULL`): `hash` a logical indicating if the created environment should use hashing, and (`size`) the hash size, see `list2env`.

Value

an environment, say E, containing the objects from ... (plus those in envir), and all function objects' environment() is E.

Author(s)

Martin Maechler

Examples

ee <- funEnv(f = function(x) g(2*(x+1)),
             g = function(y) hh(y+1),
            hh = function(u) u^2,
          info = "Some Information (not a function)")
ls(ee) # here the same as  names(ee)
## Check that it works: i.e., that "f sees g" and "g sees hh":
stopifnot(all.equal(ee$f(pi), (2*pi+3)^2))
ee$f(0:4) # [1]  9  25  49  81 121

sfsmisc

Utilities from 'Seminar fuer Statistik' ETH Zurich

v1.1-11

GPL (>= 2)

Authors

Martin Maechler [aut, cre] (<https://orcid.org/0000-0002-8685-9910>), Werner Stahel [ctb] (Functions: compresid2way(), f.robftest(), last(), p.scales(), p.dnorm()), Andreas Ruckstuhl [ctb] (Functions: p.arrows(), p.profileTraces(), p.res.2x()), Christian Keller [ctb] (Functions: histBxp(), p.tachoPlot()), Kjetil Halvorsen [ctb] (Functions: KSd(), ecdf.ksCI()), Alain Hauser [ctb] (Functions: cairoSwd(), is.whole(), toLatex.numeric()*), Christoph Buser [ctb] (to function Duplicated()), Lorenz Gygax [ctb] (to function p.res.2fact()), Bill Venables [ctb] (Functions: empty.dimnames(), primes()), Tony Plate [ctb] (to inv.seq()), Isabelle Fl<fc>ckiger [ctb], Marcel Wolbers [ctb], Markus Keller [ctb], Sandrine Dudoit [ctb], Jane Fridlyand [ctb], Greg Snow [ctb] (to loessDemo()), Henrik Aa. Nielsen [ctb] (to loessDemo()), Vincent Carey [ctb], Ben Bolker [ctb], Philippe Grosjean [ctb], Fr<e9>d<e9>ric Ibanez [ctb], Caterina Savi [ctb], Charles Geyer [ctb], Jens Oehlschl<e4>gel [ctb]

Initial release

2021-04-03