Coerce an object to a name or call.
Coerce to function.
Helper to create vectors with matching length.
Coerce quoted expressions to quoted formula.
Coerce to an environment.
Signal an error, warning, or message.
Find the expression associated with an argument
Capture an expression and evaluation environment.
Inspect an argument
Generate or handle a missing argument
Inspect a call.
Create a call by "hand"
Extract function name of a call
Extract function from a call
Create a condition object.
Modify the arguments of a call.
Display a call (or expression) as a tree.
Standardise a call against formal arguments
Bare type predicates
Extract arguments from a call
Bury bindings and define objects in new scope.
Get the environment of the caller frame.
Inspect dots
Assign objects to an environment.
Assign a promise to an environment.
Signal a condition.
Get the namespace of a package.
Clone an environment.
Scope environments
Get the empty environment.
Assignment operator for environments.
Get an environment.
Is object a condition?
Find the position or distance of a frame on the evaluation stack.
Extract dots
Build a named list from the LHS of formulas
Is object a ..n symbol?
Get/set formula components.
Create a formula object by "hand".
Turn RHS of formula into a string/label.
Is object a formula?
Is object a frame?
Create a function by "hand"
Is object a function?
Extract arguments from a function
Get names of a vector.
Modify a vector.
Is an object a language object?
Create new vectors.
Quoting assignment operator.
Create a restarting handler.
Jump to or from a frame.
Restarts utilities.
Jump to the abort restart.
Add attributes to an object.
Type predicates
Return the closure environment of a function.
Unwrap a formula
Invoke a function with a list of arguments.
Is object a call?
Is object a stack?
Is object named?
Parse R code.
Default value for NULL.
Does an environment have or see bindings?
Get an object from an environment.
Establish a restart point on the stack.
Call stack information
Trim top call layers from the evaluation stack.
Set an environment.
Remove bindings from an environment.
Infix attribute accessor.
Replace missing values.
Create an exiting or in place handler.
Interpolate a formula
How long is an object?
Evaluate a formula
Is object an environment?
Is object an empty vector or NULL?
Prepend a vector.
Splice objects and lists of objects into a list
Set names of a vector.
Name of a primitive function
Is object identical to TRUE or FALSE?
Evaluate an expression within a given environment.
Scalar type predicates
Jump to a muffling restart.
Missing values.
Establish handlers on the stack.
Evaluate a formula
Interpolate a quoted expression.
Evaluate an expression in an environment.
Turn an expression to a label.
Capture an expression and evaluation environment.
Create a tidy evaluation environment.
Untidy quotation of an expression.
Tidy quotation of an expression.
Evaluate a formula
Process unquote operators in a captured expression.
Get the empty environment.
Assign a promise to an environment.
Get the environment of the caller frame.
Coerce quoted expressions to quoted formula.
Create a formula object by "hand".
Create a function by "hand"
Get the namespace of a package.
Create a condition object.
Create a call by "hand"
Scope environments
Coerce expressions to a tidy formula quote.
Capture dots.
Definition operator.
Create a tidy quote by hand.
Create a formula object by "hand".
Is a vector integer-like?
Does an object have an element with this name?