makeCacheMatrix and cacheSolve implemented.

Author: eddvdm

cachematrix.R

@@ -1,15 +1,31 @@
-## Put comments here that give an overall description of what your
-## functions do
-
-## Write a short comment describing this function
-
+## Takes a square matrix as argument and returns a list with functions
+## to solve the inverse and cache it to return it if was already called once;
 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)
 }
 
 
-## Write a short comment describing this function
-
+## Takes a CacheMatrix list as argument and invokes the implemented
+## getInverse, which returns the inverted matrix, cached if it was already solved
+## called once or solves it and caches it for the next call;
 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
 }