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yakczh
V2EX  ›  Erlang

erl中怎么实现变量标志

  •   
  •   yakczh · Mar 18, 2013 · 6962 views
    This topic created in 4973 days ago, the information mentioned may be changed or developed.
    比如　
    global flag=0

    on data

    if (flag == 0) {
    print "first"; flag=1
    }else {
    print "after..."
    }


    这种代码在erl中怎么写？
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