ll: Generates a list of informative properties of all members of an environment

Description

Generates a list of informative properties of all members of an environment.

Usage

# S3 method for default
ll(pattern=".*", ..., private=FALSE, properties=getOption("R.oo::ll/properties",
  c("data.class", "dimension", "objectSize")), sortBy=NULL, decreasing=FALSE,
  envir=parent.frame())

Value

Returns a data.frame containing information about all the members.

Arguments

pattern: Regular expression pattern specifying which members to return. If ".*", all names are matched.
...: A named vector of format functionName=value, where functionName() will be called on each member found. If the result matches the value, the member is returned, otherwise not.
private: If TRUE, also private members, i.e. members with a name starting with a . (period), will be listed, otherwise not.
properties: Names of properties to be returned. There must exist a function with the same name, because it will be called. This way one can extract any type of property by defining new methods.
sortBy: Name or index of column (property) to be sorted by. If NULL, the objects are listed in the order they are found.
decreasing: A logical indicating whether the sorting should be done in increasing or decreasing order.
envir: An environment, a search path index or a name of a package to be scanned.

Default properties returned

It is possible to set the default value of argument properties by setting option "R.oo::ll/properties", e.g. options("R.oo::ll/properties"=c("data.class", "dimension")). If this option is not set when the package is loaded, it is set to c("data.class", "dimension", "objectSize").

Author