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cachematrix.R
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cachematrix.R
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## This file contains the functions that demonstrate the concepts of Lexical
## Scoping and Caching to speed up computations.
## The following function creates a special "vector" which is basically a list
## of getter and setter functions to set and get the value of the matrix as
## well as the inverse.
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)
}
## The cacheSolve function checks if the matrix's inverse has been cached already
## If yes, then it speeds up the runtime by returning the cached value, else it
## computes the inverse and stores it in the cache.
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)
}