From b6c1e380e138e9afbaf160c6b8ecc63b2c24ce9b Mon Sep 17 00:00:00 2001 From: Torsten Ruger Date: Fri, 11 Jul 2014 21:02:13 +0300 Subject: [PATCH] spelling --- crystal/optimisations.md | 4 ++-- index.html | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/crystal/optimisations.md b/crystal/optimisations.md index 5e39151..2b03c50 100644 --- a/crystal/optimisations.md +++ b/crystal/optimisations.md @@ -17,13 +17,13 @@ But this can easily lead to a dictionary/hash type of implementation. As variabl common thing an OO system does, that leads to bad performance (unneccessarily). So instead we keep variables layed out c++ style, continous, array style, at the address of the object. Then we have -to manage that in a dynamic manner. This (as i mentioned elsewhere) is done by the indirection of the Layout. A Layout is +to manage that in a dynamic manner. This (as i mentioned [here](memory.html)) is done by the indirection of the Layout. A Layout is a dynamic structure mapping names to indexes (actually implemented as an array too, but the api is hash-like). When a new variable is added, we create a *new* Layout and change the Layout of the object. We can do this as the Layout will determine the Class of the object, which stays the same. The memory page mentions how this works with constant sized objects. -So, Problem one fixed: instance variable access at o(0) +So, Problem one fixed: instance variable access at O(1) #### II - Method lookup diff --git a/index.html b/index.html index b6520d1..ebfe260 100755 --- a/index.html +++ b/index.html @@ -14,7 +14,7 @@ sub-title: By way of a new look at programming. Efficiency is going fast, like an airplane is much more efficient than a car and that is more so than walking.

- Effectiveness on the other hand is how straight your route is. Say your in Hamburg and want to go to Berlin, then + Effectiveness on the other hand is how straight your route is. Say you're in Hamburg and want to go to Berlin, then it is not effective to go to Rome first.