paramNames

paramNames,SimultaneousTypeSpecification-method

paramNames,IndependentTypeSpecification-method

paramNames,TypeSpecification-method

paramNames,NamedTypeTest-method

paramNames,TypedSignature-method

paramNames,ReturnTypeSpecification-method

paramNames,function-method

the object from which we are to identify the names of the
     parameters


  This generic function has methods  for computing the names of
  all the parameters in a type specification for a function
  for which type information is explicitly specified.
  There is also a method for functions which merely returns the names of
  the formal parameters, i.e. a call to <code><a rd-options="base" href="/link/formals?package=TypeInfo&version=1.38.0&to=base" data-mini-rdoc="base::formals">formals</a></code>.


programming

interface

A prototype for a mechanism for specifying the types of
parameters and the return value for an R function. This is
meta-information that can be used to generate stubs for servers
and various interfaces to these functions. Additionally, the
arguments in a call to a typed function can be validated using
the type specifications.
We allow types to be specified as either
i) by class name using either inheritance -  is(x, className),
or strict instance of - class(x) %in% className, or
ii) a dynamic test given as an R expression which is evaluated
at run-time.
More precise information and interesting tests can be done via
ii), but it is harder to use this information as meta-data as
it requires more effort to interpret it and it is of course
run-time information. It is typically more meaningful.

Duncan Lang

TypeInfo

Optional Type Specification Prototype

paramNames function

This generic function has methods  for computing the names of
  all the parameters in a type specification for a function
  for which type information is explicitly specified.
  There is also a method for functions which merely returns the names of
  the formal parameters, i.e. a call to <code><a href="formals" rd-options="base">formals</a></code>.

paramNames: Compute the names of all the specified parameters in a TypeSpecification object

Description

Usage

Arguments

Value

See Also