Function template is_from_range
boost::algorithm::is_from_range — is_from_range predicate 
 
Synopsis
template<typename CharT> unspecified is_from_range(CharT From, CharT To);
 
Description
Construct the is_from_range  predicate. The predicate holds if the input is included in the specified range. (i.e. From <= Ch <= To )
Parameters
- From
 
The start of the range 
 
- To
 
The end of the range 
 
 
Returns:
    An instance of the is_from_range  predicate