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) orhexadecimal (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