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cachematrix.R
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cachematrix.R
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## Put comments here that give an overall description of what your
## functions do
## Write a short comment describing this function
makeCacheMatrix <- function(x = matrix()) {
inv <- NULL ## initialize inv as NULL; will hold value of inverse matrix
set <- function(y) { ## set to assign new function
x <<- y ## value of matrix in parent environment
inv <<- NULL ## if there is a new matrix, reset inv to NULL
}
get <- function() {x} ## define the get function - returns value of the matrix argument
setInverse <- function(inverse) {inv <<- inverse} ## assigns value of inv in parent environment
getInverse <- function() {inv} ## gets the value of inv where called
list(set = set, get = get, setInverse = setInverse, getInverse = getInverse)
}
## Write a short comment describing this function
cacheSolve <- function(x, ...) {
## Return a matrix that is the inverse of 'x'
inv <- x$getInverse()
if(!is.null(inv)) { ## if inverse has not been already cached, it is cached and collected
message("cached data collected")
return(inv)
}
m <- x$get()
inv <- solve(m, ...)
x$setInverse(inv)
inv
}