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Re: How to check if a field is a number (integer or float)?

From: Peng Yu
Subject: Re: How to check if a field is a number (integer or float)?
Date: Sun, 20 Jun 2021 16:09:32 -0500

On 6/20/21, arnold@skeeve.com <arnold@skeeve.com> wrote:
> Peng Yu <pengyu.ut@gmail.com> wrote:
>> > This is exactly correct. As you have been told many times: Read The
>> > Manual
>> > and then you will no longer need to ask questions here. This will save
>> > time for you, me and everyone else on this list.
>> That is not correct. Reading the manual is not sufficient to ensure a
>> solution is 100% correct. There can be always corner cases that only
>> somebody who is familiar with the awk internal can be sure about.
>> Otherwise, there wouldn't be so many partially correct solutions
>> floating no the web.
> You're a big boy. Read the manual, try stuff out on your own, and
> figure out how things work.  And/or read the code yourself.

There is no way to be sure about a solution is 100% correct.

>> >> The best solution that I figured out is just `typeof(x) == "strnum"`||
>> >> typeof(x) == "number"` instead of using regex.
>> >
>> > That should work.
>> See, if this is disagreed by the next reply.
> If you mean Andy's note, there's no contradiction in what he wrote
> and in the test for strnum or number.


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