Only allow floating points regex

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grep regular-expression numeric-data floating-point

                          How can I check if a specific string is a floating points?
This are possible floating points:

    12.245
    +.0009
    3.11e33
    43.1E11
    2e-14

This is what I tried:

    grep "^[+\-\.0-9]" 
    grep "^[+-]*[0-9]"
    grep "^[+\-\.0-9]" 

And other lots of related things, but none filtered anything at all. Almost every string got through. How would I tackle this problem?


                        

Asked by O'Niel (169 rep)

Oct 12, 2017, 07:41 PM
Last activity: Mar 7, 2024, 07:47 PM

Only allow floating points regex

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