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Calculate mode (most common element) of a vector

Tarone's Z Test

Approximate AUC

Approximate CDF of Dirichlet

Multi-indicators / "Bag o Words"

Bat passes

Efficient binary search for character vectors

Calculate Body Mass Index

Split a vector into n chunks

Clamp a value into a range

List all methods for an object

Replace NAs in parallel vectors

Copy objects from one environment to another

Back transform correlation matrix to variance-covariance matrix

Find duplicates in a vector

Flatten a list without type coercion

Find efficient frontier

Evaluate Polynomial and Rational Functions using Horner's method

Split an interaction'ed factor back into seperate variables

Convert indices to logical vector

Log-Likelihood for k-means clustering (for calculating AIC and BIC)

Improved list of objects

Argument matching with defaults

Handle Missing Values with Fill + Dummy

Parse LDAP output into dataframe

Partially apply a function

Generate all distinct permutations of a vector

Sample rows from a dataframe or matrix

Distribution methods for density objects

Wait for a keypress

Reflect upper/lower triangle across diagonal

Replace NULLs in nested lists

Resave a session

Recursivly split a data.frame

sin/cos pairs for modeling

Split paths into folders

sprintf, with named references

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Reverse each string of a vector

Substitute on an expression in a value

Transpose a list-of-lists

Strip leading / trailing zeros

Remove duplicated columns

Reverse a scale

Zip / Enumerate from python