simecol (version 0.5-5)

addtoenv: Add Functions from a Non-nested List of Named Functions to a Common Environment

Description

Create and set an environment where functions within a non-nested named list of functions see each other. This function is normally used within other functions.

Usage

addtoenv(L, p=parent.frame())

Arguments

L

A non-nested list of named functions.

p

The environment where the functions are assigned to. Defaults to the parent frame.

Value

• The list of equations within a common environment.

Details

This function was formerly used by `solver functions' of simecol.

See Also

attach, environment

Examples

eq <- list(f1 = function(x, y)    x + y,
               f2 = function(a, x, y) a * f1(x, y)
              )

    fx <- function(eq) {
      eq <- addtoenv(eq)
      print(ls())
      print(environment(eq$f1))
      f1(3,4) + f2(1,2,3)
    }

    fx(eq)
    # eq$f2(2,3,4)       # should give an error outside fx
    environment(eq$f2)   # should return R_GlobalEnv again