Prove safety offer53: a numerical value string, the string "+100", "5e2", "- 123", "3.1416" and "-1E-16" shows the value. But "12e", "1a3.14", "1.2.3", "+ - 5" and "12e + 4.3" is not

NoSuchKey

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Origin www.cnblogs.com/wxwhnu/p/11429020.html