Approximate String Matching (Fuzzy Matching)
Date Conversion Functions to and from Character
Solve an Upper or Lower Triangular System
Balancing "Ragged" and Out-of-range POSIXlt Date-Times
Binding and Environment Locking, Active Bindings
Access to and Manipulation of the Body of a Function
Functions to Retrieve Values Supplied by Calls to the Browser
Returns the Names of All Built-in Objects
Apply a Function to a Data Frame Split by Factors
Expand a String with Respect to a Target Table
Warn About Extraneous Arguments in the "..." of Its Caller
Inverse from Cholesky (or QR) Decomposition
Search for Masked Objects on the Search Path
Functions to Manipulate Connections (Files, URLs, ...)
Report Information on C Stack Size and Usage
Convert a Date or Date-Time Object to a Factor
Convert a Data Frame to a Numeric Matrix
Write an Object to a File or Recreate it
Apply a Function Over Values in an Environment
Read or Set the Declared Encodings for a Character Vector
Create a Data Frame from All Combinations of Factor Variables
Extract or Replace Parts of a Data Frame
Manipulation of Directories and File Permissions
Call a function with Some Arguments Forced
Internal Versions of the Foreign Function Interface
Access to and Manipulation of the Formal Arguments
Common Higher-Order Functions in Functional Programming Languages
Reflectance Information for C/Fortran routines in a DLL
Obtain a Description of one or more Native (C/Fortran) Symbols
Integer Numbers Displayed in Hexadecimal
Convert Character Vector between Encodings
Is an Object of Type (Primitive) Function?
Date-time Conversion Functions from Numeric Representations
Test if a Matrix or other Object is Symmetric (Hermitian)
Compute or Estimate the Condition Number of a Matrix
Loading/Attaching and Listing of Packages
From A List, Build or Add To an Environment
Lower and Upper Triangular Part of a Matrix
Apply a Function to Multiple List or Vector Arguments
Argument Verification Using Partial Matching
Count the Number of Characters (or Bytes or Width)
Class for 'no quote' Printing of Character Strings
Not Yet Implemented Functions and Unused Arguments
Find Zeros of a Real or Complex Polynomial
Convert Positions in the Search Path to Environments
Express Table Entries as Fraction of Marginal Table
Reconstruct the Q, R, or X Matrices from a QR Object
Convert to or from (Bit/Packed) Raw Vectors
Transfer Binary Data To and From Connections
Transfer Character Strings To and From Connections
Serialization Interface for Single Objects
Remove Objects from a Specified Environment
Give Column Sums of a Matrix or Data Frame, Based on a Grouping Variable
Scaling and Centering of Matrix-like Objects
Sorting Vectors or Data Frames by Other Vectors
Read R Code from a File, a Connection or Expressions
Formal Method System - Dispatching S4 Methods
Does String Start or End With Another String?
Date-time Conversion Functions to and from Character
Repeat the Elements of a Character Vector
Split the Elements of a Character Vector
Trim Character Strings to Specified Display Widths
Wrap Character Strings to Format Paragraphs
Subsetting Vectors, Matrices and Data Frames
Singular Value Decomposition of a Matrix
Find Details of the Numerical and Monetary Representations in the Current Locale
Functions to Access the Function Call Stack
Parse and Evaluate Expressions from a File
Query the Names of the Current Internal Top-Level Task Callbacks
Convert an R Object to a Character String
Interactive Tracing and Debugging of Calls to a Function or Method
Transform an Object, for Example a Data Frame
Try an Expression Allowing Error Recovery
Functions to Get and Set Hooks for Load, Attach, Detach and Unload
Convert Integer Vectors to or from UTF-8-encoded Character Vectors
Check if a Character Vector is Validly Encoded
Extract Parts of a POSIXt or Date Object
Where is the Min() or Max() or first TRUE or FALSE ?
Evaluate an Expression in a Data Environment
Auxiliary Function for Sorting and Ranking
Rounding of Numbers: Zapping Small Ones to Zero
Numerical Characteristics of the Machine