摘要：每天定下三到四项最重要的任务，这样大脑才能保证专注试图‘一心多用’地解决复杂问题实在是个下策 阅读全文

摘要：when use Remove method of stringbuilder, for large string, it will cause OutofMemory exception, so the solution is to use stringbuilder.lenght=0 to remove string 阅读全文