eval: Evaluate an (unevaluated) expression

Description Usage Arguments Value See Also Examples

Description

eval evaluates an R expression in a specified environment.

NOTE: This man page is for the eval S4 generic function defined in the BiocGenerics package. See ?base::eval for the default method (defined in the base package). Bioconductor packages can define specific methods for objects not supported by the default method.

Usage

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eval(expr, envir=parent.frame(),
           enclos=if (is.list(envir) || is.pairlist(envir))
                  parent.frame() else baseenv())

Arguments

expr

An object to be evaluated. May be any object supported by the default method (see ?base::eval) or by the additional methods defined in Bioconductor packages.

envir

The environment in which expr is to be evaluated. May be any object supported by the default method (see ?base::eval) or by the additional methods defined in Bioconductor packages.

enclos

See ?base::eval for a description of this argument.

Value

See ?base::eval for the value returned by the default method.

Specific methods defined in Bioconductor packages should behave as consistently as possible with the default method.

See Also

Examples

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eval  # note the dispatch on 'expr' and 'envir' args only
showMethods("eval")
selectMethod("eval", c("ANY", "ANY"))  # the default method

BiocGenerics documentation built on Nov. 17, 2017, 1:23 p.m.