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pryr

pryr is superseded. Please use:

rlang for low-level R programming.
lobstr for object sizes & comparison.
sloop for OOP tools.

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Version

Install

install.packages('pryr')

Monthly Downloads

26,556

Version

0.1.5

License

GPL-2

Issues

Pull Requests

Stars

203

Forks

Repository

https://github.com/hadley/pryr

Maintainer

Hadley Wickham

Last Published

July 26th, 2021

Functions in pryr (0.1.5)

dots

Capture unevaluated dots.

explicit

Tools for making promises explicit

enclosing_env

Find the environment that encloses of a function.

%<c-%

Create a constant (locked) binding.

is_active_binding

Active binding info

%<d-%

Create an delayed binding.

is_promise

Promise info

mem_change

Determine change in memory from running code

make_function

Make a function from its components.

names_c

Extract function table from names.c from R subversion repository.

object_size

Compute the size of an object.

as.envlist

Convert a list of environments to an envlist object.

A compact syntax for anonymous functions.

%<a-%

Create an active binding.

fget

Find a function with specified name.

subs

A version of substitute that works in the global environment.

substitute_q

A version of substitute that evaluates its first argument.

bytes

Print the byte-wise representation of a value

call_tree

Display a call (or expression) as a tree.

modify_lang

Recursively modify a language object

modify_call

Modify the arguments of a call.

parenv

Get parent/ancestor environment

partial

Partial apply a function, filling in some arguments.

ftype

Determine function type.

sexp_type

Inspect internal attributes of R objects.

parenvs

Given an environment or object, return an envlist of its parent environments.

print.envlist

Print an envlist

method_from_call

Given a function class, find correspoding S4 method

mem_used

How much memory is currently used by R?

rebind

Rebind an existing name.

find_funs

Find functions matching criteria.

find_uses

Find all functions in that call supplied functions.

parent_promise

Find the parent (first) promise.

otype

Determine object type.

track_copy

Track if an object is copied

Find C source code for internal R functions

standardise_call

Standardise a function call

uneval

Capture the call associated with a promise.

where

Find where a name is defined.

make_call

Make and evaluate calls.

is_s3_generic

Determine if a function is an S3 generic or S3 method.

compose

Compose multiple functions