Macros in Ruby?

Question

Just wondering, is there a way to use macros in Ruby that does an in-text substitution the way C would work?

For example:

define ARGS 1,2
sum(ARGS) # returns 3

EDIT: More specifically my problem looks more like:

@button1 = FXButton.new(self, "Button 1",:opts => BUTTONPROPERTIES,:width => width, :height => height)
@button2 = FXButton.new(self, "Button 2",:opts => BUTTONPROPERTIES,:width => width, :height => height)
@button3 = FXButton.new(self, "Button 3",:opts => BUTTONPROPERTIES,:width => width, :height => height)

And ideally I'd want the code to look like:

@button1 = FXButton.new(self, "Button 1", ALLBUTTONPROPERTIES)
@button2 = FXButton.new(self, "Button 2", ALLBUTTONPROPERTIES)
@button3 = FXButton.new(self, "Button 3", ALLBUTTONPROPERTIES)

Notice how I have "width" and "height" variables that won't properly be passed to the initialization of the FXButton class if I just set them to some predetermined value. Is there some kind of code substitution that would take care of this issue?

Answer 1

You don't need a macro. Just define a variable or a constant.

A = [1, 2]
A.inject(:+) # => 3

---

After the edit to your question

You can do like this:

ALLBUTTONPROPERTIES = ->{{opts: => BUTTONPROPERTIES, width: width, height: height}}

and within a context where the constants and variables BUTTONPROPERTIES, width, height are assigned some value, do this:

@button1 = FXButton.new(self, "Button 1", ALLBUTTONPROPERTIES.call)
@button2 = FXButton.new(self, "Button 2", ALLBUTTONPROPERTIES.call)
@button3 = FXButton.new(self, "Button 3", ALLBUTTONPROPERTIES.call)