plNotes

todo
<!–

  • syntax 句法 how you write sth
  • semantics 语义学 what sth means
  • evaluate abbr-> eval 赋值/演算/评价/估计/执行?
    https://zh.wikipedia.org/wiki/Eval
  • evaluation rules 执行规则?
    Program evaluation is a systematic method for collecting, analyzing, and using information to answer questions about projects, policies and programs, particularly about their effectiveness and efficiency.
    –>