# defmethod Add a method directly to a type without defining a protocol. ## Syntax 
defmethod TypeName method-name { |params| body }
defmethod TypeName method-name { |params| body } when guard
## Examples 
deftype Point %{ x %{} y %{} }

defmethod Point magnitude {||
    [sqrt (($self~x * $self~x) + ($self~y * $self~y))]
}

defmethod Point scale-by {|factor^number|
    %Point{ x ($self~x * $factor) y ($self~y * $factor) }
}

set p %Point{ x 3 y 4 }
echo [$p magnitude]       # 5
echo [$p scale-by 2]~x    # 6
# Guard-based dispatch
defmethod Point classify {||} when ($self~x == 0 and $self~y == 0) { "origin" }
defmethod Point classify {||} when ($self~x == 0) { "y-axis" }
defmethod Point classify {||} { "general" }
## Notes - `$self` refers to the instance - Guards allow multiple methods with same name — first matching guard wins - Use `||` for zero-param methods - Called with `[$instance method-name args...]` ## See Also `deftype`, `defprotocol`, `defimpl`
← defmacro
defmod →