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SketchyLISP
Reference
  Copyright (C) 2007
Nils M Holm

8 Differences to Scheme

8.1 Syntax

Because SketchyLISP is purely applicative, some of its syntaxes are a little more strict than their Scheme counterparts. For example,

8.2 Syntax Transformers

SketchyLISP syntax transformers implement ony a subset of R5RS syntax transformers:

Syntax transformers are first class objects in SketchyLISP:

let* => #<syntax let*>

8.3 Omissions

The following R5RS functions and other features are not implemented in SketchyLISP.

8.3.1 Concepts

Named let, quasi quotation, lazy evaluation, input/output port data types, the => operator of cond, mutable data, multiple values, numeric base prefixes (#b #d #o #x), rational numbers, floating point numbers, complex numbers.

First-class continuations were part of SketchyLISP up to and including version 2006-11-27. They are no longer part of the language.

8.3.2 Functions

Quasi quotation: , ,@ ` quasiquote unquote unquote-splicing

Input/Output: call-with-input-file call-with-output-file close-input-port close-output-port current-input-port current-output-port char-ready? input-port? open-input-file open-output-file output-port? port?

Numeric: / acos angle asin atan ceiling complex? cos denominator exact->inexact exact? exp floor imag-part inexact->exact inexact? log magnitude make-polar make-rectangular numerator rational? rationalize real-part real? round sin tan truncate

Vectors: make-vector vector-fill! vector-set!

Other: call-with-current-continuation call-with-values delay do dynamic-wind eval for-each force let-syntax letrec-syntax make-string set! set-car! set-cdr! string-copy string-fill! string-set! transcript-off transcript-on values