| Thinking in C++ Vol 2 - Practical Programming |
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C++ string objects provide developers with a number
of great advantages over their C counterparts. For the most part, the string
class makes referring to strings with character pointers unnecessary. This
eliminates an entire class of software defects that arise from the use of
uninitialized and incorrectly valued pointers.
C++ strings dynamically and transparently grow their
internal data storage space to accommodate increases in the size of the string
data. When the data in a string grows beyond the limits of the memory initially
allocated to it, the string object will make the memory management calls that
take space from and return space to the heap. Consistent allocation schemes
prevent memory leaks and have the potential to be much more efficient than
roll your own memory management.
The string class member functions provide a fairly
comprehensive set of tools for creating, modifying, and searching in strings.
String comparisons are always case sensitive, but you can work around this by
copying string data to C-style null-terminated strings and using
case-insensitive string comparison functions, temporarily converting the data
held in string objects to a single case, or by creating a case-insensitive
string class that overrides the character traits used to create the basic_string
object.
| Thinking in C++ Vol 2 - Practical Programming |
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