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a.split(re#;#).length()

Operators are syntactic sugar for normal function application. The left hand of the period (.) is inserted as the first argument of the function call. For example

foo = function (self, arg1, arg2) {
  // `self` is the left hand side of `.`
}

// then use it
"something".foo(1, 2)
// which is the same as
foo("something", 1, 2)

// Another example:
a.split(re#;#).length()
// is the same as
length(split(a, re#;#))

The following sections describe operators currently available. They are organized based on the kind of value on which they operate.

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