Largest Number for a variable

[Mumuji]

I made a calculator which somehow could display values over one trillion. So I need to know what is the maximum possible value for a variable as I am making a second one (port), but it needs a isNaN, so I need to find the max value or something like that. Any help would be appreciated.

[Salman_Dev]

@Mumuji

but it needs a isNaN

isNaN = (Not-a-Number)

[Mumuji]

thx
10 characters

[Taifun]

@Mumuji

10 characters

See also

Check if number is an integer

Another negative to that approach is that once your values are large/small enough, App Inventor will switch to using scientific notation, so even though there's a period present in the printed representation that doesn't imply that "integer-ness" of the value. For example, 1.234567E10 is an integer but 1.234567E5 is not.

Taifun

[ABG]

More from the horse's mouth ...

Strings, numbers, what size can they have?

I’ll address the question in three parts as the actual answer is somewhat complicated. In particular, it’s important to know that at the core of App Inventor is an implementation of the Scheme language called Kawa. Theoretical String Length There are two different internal string types in App Inventor. Kawa provides a mutable string type called FString and then there’s Java’s standard String type. Conversions are done from FString to String on an as needed basis to interact with the parts of th…

[ewpatton]

@ABG

More from the horse's mouth ...

I personally consider myself an instances of HomoSapiens