#!/usr/bin/env ruby require "prawn" pdf = Prawn::Document.new p pdf.bounds.top_right で、 [540.0, 720.0]

まんま >>> from lepl import * >>> expr = Delayed() >>> number = Digit()[1:,...] >>> with Separator(r'\s*'): ... term = number | '(' & expr & ')' ... muldiv = Any('*/') ... factor = term & (muldiv & term)[:] ... addsub = Any('+-') ... expr …