cacheable matrix solver ;)

Author: prepor

cachematrix.R

@@ -1,15 +1,42 @@
-## Put comments here that give an overall description of what your
-## functions do
-
-## Write a short comment describing this function
+## Functions for cache result of matrix inversion.
+##
+## Example:
+## > x <- makeCacheMatrix(matrix(1:4, nrow = 2, ncol=2))
+## > cacheSolve(x)
+##      [,1] [,2]
+## [1,]   -2  1.5
+## [2,]    1 -0.5
+## > cacheSolve(x)
+## getting cached data
+##      [,1] [,2]
+## [1,]   -2  1.5
+## [2,]    1 -0.5
 
+## Make special cachable version of matrix
 makeCacheMatrix <- function(x = matrix()) {
-
+  c <- NULL
+  set <- function(y) {
+    x <<- y
+    c <<- NULL
+  }
+  get <- function() x
+  setsolve <- function(solved) c <<- solved
+  getsolve <- function() c
+  list(set = set, get = get,
+       setsolve = setsolve,
+       getsolve = getsolve)
 }
 
 
-## Write a short comment describing this function
-
+## Solve matrix or get cached result if already solved
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+  m <- x$getsolve()
+  if(!is.null(m)) {
+    message("getting cached data")
+    return(m)
+  }
+  data <- x$get()
+  m <- solve(data, ...)
+  x$setsolve(m)
+  m
 }