[^] cached matrix inverse methods implemeted

lunich · lunich · commit e054216e3726 · 2015-01-24T14:45:43.000+02:00
diff --git a/cachematrix.R b/cachematrix.R
@@ -4,12 +4,28 @@
 ## Write a short comment describing this function
 
 makeCacheMatrix <- function(x = matrix()) {
-
+  i <- NULL
+  set <- function(y) {
+    x <<- y
+    i <<- NULL
+  }
+  get <- function() x
+  setinverse <- function(inv) i <<- inv
+  getinverse <- function() i
+  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'
+  i <- x$getinverse()
+  if(!is.null(i)) {
+    message("getting cached result")
+    return(i)
+  }
+  data <- x$get()
+  i <- solve(data, ...)
+  x$setinverse(i)
+  i
 }
