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cachematrix.R #1

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10 changes: 3 additions & 7 deletions cachematrix.R
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Original file line number Diff line number Diff line change
@@ -1,11 +1,9 @@
## Pair of functions that cache the inverse of a matrix
## Usage: Pass the result of a makeCacheMatrix call to cacheSolve
#Usage: Pass the result of a makeCacheMatrix call to cacheSolve

#' Util function that set the matrix and the inverse in an environment
#' @param x an invertible matrix
#' examples
#' x = makeCacheMatrix(matrix(rnorm(9), 3, 3))
#' x$set(matrix(rnorm(16), 4, 4))

makeCacheMatrix <- function(x = matrix()) {
# todo error if x is not a matrix
inv <- NULL
Expand All @@ -25,9 +23,7 @@ makeCacheMatrix <- function(x = matrix()) {
#' Compute and cache the inverse of a matrix
#' @param x the result of a previous makeCacheMatrix call
#' @param ... additional arguments to pass to solve function
#' examples
#' x = makeCacheMatrix(matrix(rnorm(9), 3, 3))
#' cacheSolve(x)

cacheSolve <- function(x, ...) {
## Return a matrix that is the inverse of 'x'
inv <- x$getinverse()
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