[ANN] New release of cppo, with multi-line macros and higher-order macros

Community
1

Hello,

It is my pleasure to announce a new release of cppo (v1.7.0) with two new features.

  • The new syntax #def ... #enddef allows a macro definition to span several lines, without backslashes. This syntax allows macro definitions to be nested.

    #def repeat_until(action,condition)
  action;
  while not (condition) do
    action
  done
#enddef

  • A parameterized macro can take a parameterized macro as a parameter: this is a higher-order macro.

    #define TWICE(e)          (e + e)
#define APPLY(F : [.], e) (let x = (e) in F(x))
let forty_two =
  APPLY(TWICE,1+2+3+4+5+6)

For more details, please see the documentation.

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