--- a/LINKS	Mon Oct 01 14:21:37 2018 +0100
+++ b/LINKS	Mon Oct 01 23:55:53 2018 +0100
@@ -18,6 +18,16 @@
 https://www.cs.cmu.edu/~fp/courses/15411-f13/lectures/
 https://www.cs.cmu.edu/~fp/courses/15411-f14/lectures/
 ===============================
+Compiler book links
+https://www.reddit.com/r/ProgrammingLanguages/comments/9k2hfd/introduction_to_compilers_and_language_design/
+
+http://www.craftinginterpreters.com
+
+Book about SSA
+http://ssabook.gforge.inria.fr/latest/book-full.pdf
+
+http://cs.lmu.edu/~ray/notes/ir/
+===============================
 Selfhosting Lisp compiler for Lua
 
 https://github.com/sctb/lumen

Binary file handouts/ho01.pdf has changed

--- a/handouts/ho01.tex	Mon Oct 01 14:21:37 2018 +0100
+++ b/handouts/ho01.tex	Mon Oct 01 23:55:53 2018 +0100
@@ -695,7 +695,7 @@
 against regular expressions. A similar argument is made in
 
 \begin{center}
-\url{https://elliot.land/validating-an-email-address}
+\url{http://elliot.land/post/its-impossible-to-validate-an-email-address}
 \end{center}