String :: isNumber - Does string contain numerical value
The function checks, whether a string contains a numerical value (dual, octal, decimal or hexadecimal). The value may contain a decimal point. Float point values are not recognized as numbers.
When the string content is numerical, the function returns true , false otherwise.
The value is true when the function was executed successfully. Otherwise the value is set to false .
Implementation overview
- Check whether string contains decimal number
String :: isNumber ( ) - Is number for specific numbering system
String :: isNumber ( iValue )
Implementation details
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Is number for specific numbering system
bool String :: isNumber ( int32 iValue )
The base for the numbering system (radix) is passed in iValue. In principle, any value between 2 and 32 is supported, but typically, dual (2), octal (8), decimal (10) or hexadecimal (16) values are used. Numbers may contain one decimal point and/or thousands separators. Any other character will lead to false result, i.e. negative values (as -5) are also not recognized as numbers.
- iValue
- Integer value
The value is passed as platform independent 32-bit integer value.
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- iValue
- Integer value