From 2c7685a080c05c002de6865ad478c1d011d7f6a4 Mon Sep 17 00:00:00 2001
From: Eduardo Vaz de Mello <wirapuret@gmail.com>
Date: Sat, 21 Feb 2015 16:26:27 -0800
Subject: [PATCH] makeCacheMatrix and cacheSolve implemented.

---
 cachematrix.R | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/cachematrix.R b/cachematrix.R
index a50be65aa44..340986796f6 100644
--- a/cachematrix.R
+++ b/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
 }