It's a minor upgrade of Scheme+ available for Guile Scheme. TL;DR: Scheme+ is an extension of the syntax of the Scheme language. Scheme+ makes it easy the assignment of Scheme objects in infix (works also in prefix) notation with a few new operators ← (or <-), [ ],⥆ (or <+) .
https://damien-mattei.github.io/Scheme-PLUS-for-Guile/Scheme+io.html and soon for Chicken and Sagittarius Scheme because it is easy to port it when SRFI-105 is already implemented for the Scheme, ports for other Scheme implementation will be more hard. already for Racket too: https://damien-mattei.github.io/Scheme-PLUS-for-Racket/Scheme+io.html I give too some examples of Scheme+ for Guile in real conditions: https://github.com/damien-mattei/library-FunctProg/blob/master/guile/logiki%2B.scm#L1978 A Petrick's method implementation: https://github.com/damien-mattei/library-FunctProg/blob/master/guile/logiki%2B.scm#L2239 A Quine - Mc Cluskey's implementation: https://github.com/damien-mattei/library-FunctProg/blob/master/guile/logiki%2B.scm#L2177 (cnf-infix-symb '{A ⊕ B ⊕ Ci}) '((¬A ∨ B ∨ ¬Ci) ∧ (¬A ∨ ¬B ∨ Ci) ∧ (A ∨ ¬B ∨ ¬Ci) ∧ (A ∨ B ∨ Ci)) (infix-symb-bool-min-dnf '{{(not a) and (not b) and (not c) and (not d)} or {(not a) and (not b) and (not c) and d} or {(not a) and (not b) and c and (not d)} or {(not a) and b and (not c) and d} or {(not a) and b and c and (not d)} or {(not a) and b and c and d} or {a and (not b) and (not c) and (not d)} or {a and (not b) and (not c) and d} or {a and (not b) and c and (not d)} or {c and (not d)}} ) ((a̅ · b · d) ➕ (b̅ · c̅) ➕ (c · d̅)) Damien
