Cannot define '1+'

[stibear]

In picrin, we cannot define symbols which begin with numbers.
If r7rs allows such like symbols, comply with it.

[nyuichi]

@stibear

No, R7RS doesn't. Digit characters are no in the first character set of symbols. See 7.1.1 Lexical structure (P.61 r7rs.pdf)

[nyuichi]

@stibear

Use pipes:

(define (|1+| n)
  (+ n 1))

or make with different name (such as 'succ')