Added functionality to the methods to calculate, cache, and retrieve matrix inverse

Author: jerslan

cachematrix.R

@@ -1,15 +1,33 @@
-## Put comments here that give an overall description of what your
-## functions do
+## small library of functions to handle caching of matrix computations
 
-## Write a short comment describing this function
+## Makes a matrix that will cache its inverse to save computation time
 
 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
+## If inverse is cached, return it... otherwise calculate it, cache it, and then return it
 
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+  ## Return a matrix that is the inverse of 'x'
+  m <- x$getinverse()
+  if(!is.null(m)) {
+    message("getting cached inverse")
+    return(m)
+  }
+  data <- x$get()
+  m <- solve(data, ...)
+  x$setinverse(m)
+  m
 }