If \ meant xor, and some of the other discussed changes: unary (prefix) operators:
\ - reference to * - list flattening ? - force to bool context ! - force to bool context, negate not - force to bool context, negate + - force to numeric context - - force to numeric context, negate ~ - force to string context . - method call on current topic - unary xor [no cooresponding operator] ++ - preincrement -- - predecrement unary (postfix) operators: ++ - postincrement -- - postdecrement ... - [maybe] same as ..Inf other postfix operators: () - (when operator is expected) [] - array access {} - hash access magical whitespace modifier _ - remove whitespace/newline hyperoperators: ^ - as prefix to any unary/binary operator, "vectorizes" the operator binary operators: + - * / % ** x xx ~ += -= *= /= %= **= x= xx= ~= < > <= >= == != <=> lt gt le ge eq ne cmp && || \\ // - boolean operations &&= ||= \\= //= and or xor err .& .| .\ << >> - bitwise or charwise operations .&= .|= .\= <<= >>= - (depending on operants) - [or maybe +& vs ~&, etc.] ?& ?| ?\ - [maybe] bitwise operations on bools (as in C) ?&= ?|= ?\= - (result is always 1 or 0) & | \ ! - superpositional operations &= |= \= - intersection, union, disjunction all any one none sum prod cat reduce ~~ !~ - smartmatch, perl5 =~,!~ => - pair creator , - list creator ; - "greater comma", list-of-lists creator : - adverbial . - method call .. - range ... - [maybe] range, exclusive of endpoint = - assignment := - binding ::= - binding, but more so trinary operator: ?? :: - if/else parens, misc, and quotelike operators () [] - [when term is expected] {} - [when term is expected] m// - shorthand, "matches" s/// - shorthand, "substitute" tr/// - shorthand, "transliterate" '...' "..." `...` /.../ << >> q qq qx rx qw (+ qr ?) (heredocs) - [exact format unknown] named unary (prefix) operators, terms, and other assorteds, identified when possible: -X - [op] filetest operators temp - [op] let - [op] ref - [op] defined - [op] undef - [op] undef - [term] exists - [op] delete - [op] but - [op] val properties ${ } - [deref] dereference scalarref @{ } - [deref] %{ } - [deref] &{ } - [deref] ... - [term] yada**3 Inf - [term] Nan - [term] is - [declar] var properties -> - [declar] like 'sub' hash - [declar] force hash context explicit radix specifications for integers: 0123 - decimal 2:0110 - binary (also b:0110?) 8:123 - octal (also o:123?) 16:123 - hex (also h:123?) 256:192.168.1.0 - base 256 (...etc...) other uncategorized: my our - [declar] map grep sqrt log sin cos tan (etc...) - math lc lcfirst uc ucfirst int ord oct hex bin