update, add safe division

[lambda.git] / code / lambda_evaluator.mdwn

diff --git a/code/lambda_evaluator.mdwn b/code/lambda_evaluator.mdwn
index 4e59b7f..2231951 100644 (file)
--- a/code/lambda_evaluator.mdwn
+++ b/code/lambda_evaluator.mdwn
@@ -1,7 +1,7 @@
 This lambda evaluator will allow you to write lambda terms and evaluate (that is, normalize) them, and inspect the results.
 This lambda evaluator will allow you to write lambda terms and evaluate (that is, normalize) them, and inspect the results.

-(This won't work in Racket, because Racket doesn't even try to represent the internal structure of a function in a human-readable way.)  
+(This won't work in Racket, because Racket doesn't even try to represent the internal structure of a function in a human-readable way.)

 
 

-*Lambda terms*: lambda terms are written with a backslash, thus: `((\x (\y x)) z)`.  
+*Lambda terms*: lambda terms are written with a backslash, thus: `((\x (\y x)) z)`.

 
 If you click "Normalize", the system will try to produce a normal-form lambda expression that your original term reduces to (~~>). So `((\x (\y x)) z)` reduces to `(\y z)`.
 
 
 If you click "Normalize", the system will try to produce a normal-form lambda expression that your original term reduces to (~~>). So `((\x (\y x)) z)` reduces to `(\y z)`.
 


@@ -109,12 +109,12 @@ Under the hood
 ---------------
 
 The interpreter is written in JavaScript and runs inside your browser.
 ---------------
 
 The interpreter is written in JavaScript and runs inside your browser.

-So if you decide to reduce a term that does not terminate (such as `((\x (x x)) (\x (x x)))`), it will be your 
+So if you decide to reduce a term that does not terminate (such as `((\x (x x)) (\x (x x)))`), it will be your

 browser that stops responding, not the wiki server.
 
 The main code is [here](http://lambda.jimpryor.net/code/lambda.js). Suggestions for improvements welcome.
 
 browser that stops responding, not the wiki server.
 
 The main code is [here](http://lambda.jimpryor.net/code/lambda.js). Suggestions for improvements welcome.
 

-The code is based on: 
+The code is based on:

 
 *      Chris Barker's JavaScript lambda calculator
 *      [Oleg Kiselyov's Haskell lambda calculator](http://okmij.org/ftp/Computation/lambda-calc.html#lambda-calculator-haskell).
 
 *      Chris Barker's JavaScript lambda calculator
 *      [Oleg Kiselyov's Haskell lambda calculator](http://okmij.org/ftp/Computation/lambda-calc.html#lambda-calculator-haskell).