assignment solution

sdether · sdether · commit 91808b634980 · 2014-07-27T13:11:24.000-07:00
diff --git a/cachematrix.R b/cachematrix.R
@@ -1,15 +1,37 @@
-## Put comments here that give an overall description of what your
-## functions do
+## This file contains two functions for creating a matrix container than can cache the inverse operation of said matrix
+## and a function to perform this inversion on that container
 
-## Write a short comment describing this function
+## makeCacheMatrix optionally takes a matrix and constructs a container that
+## allows the setting and getting of the the contained matrix as well as the
+## inverse of that matrix
 
 makeCacheMatrix <- function(x = matrix()) {
-
+  i <- NULL
+  set <- function(y) {
+    x <<- y
+    i <<- NULL
+  }
+  get <- function() x
+  setinverse <- function(inverse) i <<- inverse
+  getinverse <- function() i
+  list(set = set, get = get,
+       setinverse = setinverse,
+       getinverse = getinverse)  
 }
 
 
-## Write a short comment describing this function
+## cacheSolve requires a cacheable matrix container and will either return
+## the already contained cached version of the inverse of the contained
+## matrix or compute the inverse, cache it in the container and then return it
 
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+  i <- x$getinverse()
+  if(!is.null(i)) {
+    message("getting cached inverse matrix")
+    return(i)
+  }
+  data <- x$get()
+  i <- solve(data, ...)
+  x$setinverse(i)
+  i
 }
