List of binary infix operators

Qiyamah · December 15, 2019, 2:04am

Is there a documentation page where all the binary infix operators are gathered?

Thanks

Tamas_Papp · December 15, 2019, 1:25pm

The best source for a list is probably the beginning of the parser source code:

JuliaLang/julia/blob/master/src/julia-parser.scm

;; Operator precedence table, lowest at top

; for most operators X there is a .X "elementwise" equivalent
(define (add-dots ops) (append! ops (map (lambda (op) (symbol (string "." op))) ops)))

;; note: there are some strange-looking things in here because
;; the way the lexer works, every prefix of an operator must also
;; be an operator.
(define prec-assignment
  (append! (add-dots '(= += -= *= /= //= |\\=| ^= ÷= %= <<= >>= >>>= |\|=| &= ⊻= ≔ ⩴ ≕))
           (add-dots '(~))
           '(:= $=)))
;; comma - higher than assignment outside parentheses, lower when inside
(define prec-pair (add-dots '(=>)))
(define prec-conditional '(?))
(define prec-arrow       (append!
                          '(-- -->)
                          (add-dots '(← → ↔ ↚ ↛ ↞ ↠ ↢ ↣ ↦ ↤ ↮ ⇎ ⇍ ⇏ ⇐ ⇒ ⇔ ⇴ ⇶ ⇷ ⇸ ⇹ ⇺ ⇻ ⇼ ⇽ ⇾ ⇿ ⟵ ⟶ ⟷ ⟹ ⟺ ⟻ ⟼ ⟽ ⟾ ⟿ ⤀ ⤁ ⤂ ⤃ ⤄ ⤅ ⤆ ⤇ ⤌ ⤍ ⤎ ⤏ ⤐ ⤑ ⤔ ⤕ ⤖ ⤗ ⤘ ⤝ ⤞ ⤟ ⤠ ⥄ ⥅ ⥆ ⥇ ⥈ ⥊ ⥋ ⥎ ⥐ ⥒ ⥓ ⥖ ⥗ ⥚ ⥛ ⥞ ⥟ ⥢ ⥤ ⥦ ⥧ ⥨ ⥩ ⥪ ⥫ ⥬ ⥭ ⥰ ⧴ ⬱ ⬰ ⬲ ⬳ ⬴ ⬵ ⬶ ⬷ ⬸ ⬹ ⬺ ⬻ ⬼ ⬽ ⬾ ⬿ ⭀ ⭁ ⭂ ⭃ ⭄ ⭇ ⭈ ⭉ ⭊ ⭋ ⭌ ￩ ￫ ⇜ ⇝ ↜ ↝ ↩ ↪ ↫ ↬ ↼ ↽ ⇀ ⇁ ⇄ ⇆ ⇇ ⇉ ⇋ ⇌ ⇚ ⇛ ⇠ ⇢ ↷ ↶ ↺ ↻))))
(define prec-lazy-or     '(|\|\||))
(define prec-lazy-and    '(&&))

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Qiyamah · December 15, 2019, 6:22pm

|\=| what is this? is this a binary infix operator by its self?

Tamas_Papp · December 15, 2019, 7:03pm

I think it is one of the “strange-looking things” the comment about the lexer refers to.