Added note about variables being immutable

This commit is contained in:
Brian Picciano 2013-05-28 00:39:43 -03:00
parent 88f1e1e705
commit 5edcb43355

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@ -40,8 +40,9 @@ item in the vector. For (a trivial) example:
The above example does a few things, but it repeats itself in the second part (with the `sub`). If we could save the
result of the addition to a variable that would be awesomesauce. The `=` function does this! It makes it so that the
first argument is equivalent to the evaluation of the second argument. Variables' first letters must be upper-case, this
is how they're differentiated from raw string literals. The above could be re-written as:
first argument is equivalent to the evaluation of the second argument. Variables' can not be re-defined to be another
value, and their first letters must be upper-case, thisis how they're differentiated from raw string literals.The above
could be re-written as:
```
[ (= AdditionResult (add 1 2))
(sub 4 AdditionResult)