- log
- font
- silence phone
- slides up to
Code
$ rlwrap go run humble.go
> (define inc (lambda (n) (+ n 1)))
> (inc 10)
- Code
- Who said code need to be written? (scratch, labview) - 2d
- Who said code need to be in files? (pharo)
- Go's source code is UTF-8
- Lex
- Convert bytes to tokens
go run _examples/toks.go
code = b'x = collatz(n)` print_tokens(code)- show it ignore whitespace
- $ vim /opt/go/src/go/scanner/scanner.go +688
- https://golang.org/ref/spec
- humble.go
- humble.go:tokenize
- token is just a str (file, lineno ...)
- run & repl
- fmt.Stringer
- readline for matching ()
- Parse
- https://golang.org/ref/spec
- $ vim /opt/go/src/go/parser/parser.go +2122
$ go run _examples/ast.go- reader
- scm.go:readSexpr
- All numbers are float (like JavaScript)
- Eval
- story on assember
- expression vs statement
- start with just func, name & variable
- need builtin
- names + case sensitive
- lisp 1/2
- if
- what are booleans? (we'll use 1.0 & 0.0)
- short circuit (
_examples/short.go) - or, and
- they do it
(or)-> 0.0(and)-> 1.0True or 1/0- define & set!
- lambda
- parameter passing (value, ref ..)
- scope
_examples/scope.go - square.scm
- collatz.scm
- fact.scm (recursion)
- adder.scm (closure)
- Show Go
- account.scm
- begin