facet class sys::Operator

sys::Obj
  sys::Operator : sys::Facet

Source

Used on methods to indicate method may be used as an operator. The operator symbol is determined by the method name:

prefix     symbol    degree
------     ------    ------
negate     -a        unary
increment  ++a       unary
decrement  --a       unary
plus       a + b     binary
minus      a - b     binary
mult       a * b     binary
div        a / b     binary
mod        a % b     binary
get        a[b]      binary
set        a[b] = c  ternary
add        a { b, }

In the case of binary operators multiple methods may be declared for a given symbol as long as every method starts with correct name, for example "plus" and "plusInt". For unary/ternary operators there can only be one method and it must be named exactly "negate", "increment", "decrement", or "set".

See docLang for additional details.

defVal

const static Operator defVal := ...

Source

Singleton for Operator facet.