Returning the value of a string (like val(string) )

[Maartensaps]

I used to program in Clipper and Qbasic and in those there was a simple way to return the value of a string (if the string contains digits)
It was VAL(string) and it would return the value of "string" starting at the first character, until the last or until the first non-digit-character.
Basically it is the opposite of CHR(int)

I would like to use it to convert stored strings (in a preference file) back to its numbers.
Now I use a sub that compares and returns, but with multi-digit strings this becomes quit complex. Especially if a decimal sign is used.:BangHead:

Did I miss it? or is it not there?
And... will it be there in the future ?

Maarten

 

[Erel]

Basic4android compiler will convert strings automatically.
For example this code is valid:

Dim i As Int = "34" * 2

 

[Maartensaps]

Great !!!

Isn't life amazing.

And I was building complicated subroutines with iterations that tested for numbers and decimal points etc etc etc... duh!

Thanks!

 

[Erel]

Note that you can use IsNumber to test whether a string can be parsed to a numeric value.

Basic4android Search: IsNumber

 

[Taha]

Basic4android compiler will convert strings automatically.
For example this code is valid:

Dim i As Int = "34" * 2

Can you make the same with:

Dim i As Int = "34 * 2"

:sign0089:

 

[Mahares]

Dim i As Int = "34 * 2"   'Not valid

Dim i As String = "34 * 2"   'returns: 34*2

Dim i As String = "34 * 2"
Dim Member() As String 
Member=Regex.Split("\*",i) 
Msgbox(Member(0) *Member(1),"")  'returns 68

Dim i As Int = "34" * 2 'returns 68

Dim i As Int = "34" * "2" 'returns 68

 

[Erel]

See this library if you want to run "expressions": ExpressionEvaluator library