Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

How can I tell whether a variable contains a valid number?

April 26, 2017valid

0

Posted

How can I tell whether a variable contains a valid number?

2 Answers

0

Posted

First, you have to define what you mean by “number”. The most common case when people ask this seems to be “a non-negative integer, with no leading + sign”. Or in other words, a string of all digits.

0

10 Posted

First, you have to define what you mean by “number”. The most common case when people ask this seems to be “a non-negative integer, with no leading + sign”. Or in other words, a string of all digits.