numCheck: Check if given string or vector is all numeric
In Tong-Chen/YSX: For Yishengxin Training

Check if given string or vector is all numeric

1	numCheck(x)

`x`	A string or a vector

TRUE or FALSE

numCheck(3)

numCheck("-1/3")

numCheck(c("1","0.2","1/3","-1"))

Tong-Chen/YSX documentation built on Jan. 25, 2021, 2:49 a.m.

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