From 7443ea5afef2dc2aaaed3965202e77e84f6ac80c Mon Sep 17 00:00:00 2001
From: Jeff Slane <j.r.slane@gmail.com>
Date: Mon, 1 Jan 2018 19:46:26 -0800
Subject: [PATCH] Added functionality to the methods to calculate, cache, and
 retrieve matrix inverse

---
 cachematrix.R | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/cachematrix.R b/cachematrix.R
index a50be65aa44..59c84c993fa 100644
--- a/cachematrix.R
+++ b/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
 }