require 'pdf/writer' require 'pdf/charts' require 'pdf/charts/stddev' pdf = PDF::Writer.new chart = PDF::Charts::StdDev.new chart.data << PDF::Charts::StdDev::DataPoint.new(1, 4.0000, 0.5774) << PDF::Charts::StdDev::DataPoint.new(2, 4.8333…

Java FAQ：S011 Q-11 class C2008042401 { //void foo() { final void foo() { System.out.println("foo in C2008042401"); } } class C2008042402 extends C2008042401 { C2008042402() { foo(); } void foo() { System.out.println("foo in C2008042402");…

「yacc.yacc(write_tables=0)」 #!/usr/bin/env python import ply.lex as lex tokens = ( 'A', 'B', 'C', ) t_A = r'A' t_B = r'B' t_C = r'C' t_ignore = " \t" def t_error(t): print "Illegal character '%s'" % t.value[0] t.lexer.skip(1) lex.lex() i…