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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
## This function will build a cache of the inverse of the
## matrix that is passed in to it.
makeCacheMatrix <- function(x = matrix()) {
m <- NULL
set <- function(y) {
x <<- y
m <<- NULL
}
get <- function() x
setinverse <- function(inverse) m <<- inverse
getinverse <- function() m
list(set = set, get = get,
setinverse = setinverse,
getinverse = getinverse)
}
## This function will return the inverse of a matrix passed in to it
## it will check the cache first (provided by the makeCacheMatrix method)
cacheSolve <- function(x, ...) {
## Return a matrix that is the inverse of 'x'
m <- x$getinverse()
if(!is.null(m)) {
message("getting cached data")
return(m)
}
data <- x$get()
m <- solve(data, ...)
x$setinverse(m)
m
}
# Results of the code running
# > tmp_mx <- matrix(1:4, nrow=2)
# > tmp_mx
# [,1] [,2]
# [1,] 1 3
# [2,] 2 4
# > mx <- makeCacheMatrix(tmp_mx)
# > cacheSolve(mx)
# [1] "list"
# [,1] [,2]
# [1,] -2 1.5
# [2,] 1 -0.5
# > cacheSolve(mx)
# [1] "list"
# getting cached data
# [,1] [,2]
# [1,] -2 1.5
# [2,] 1 -0.5
# >