HP Integrity NonStop J-Series - Manual (Page 292)

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©Copyright 1996 Rogue Wave Software
Use the Capabilities of the Library!
By far the most common mistake is not to use the full power of the library. If you find yourself
writing a little "helper" class, consider why you are doing it. Or, if what you are writing is
looking a little clumsy, then maybe there's a more elegant approach. A bit of searching through
the Tools.h++ manual may uncover just the thing you're looking for!
Here's a surprisingly common example:
main(int argc, char* argv[]){
char buffer[120]; //uh oh: possible overflow
ifstream fstr(argv[1]);
RWCString line;
while (fstr.readline(buf,sizeof(buf)) {
line = buf; //hmm: extra copy
cout << line;
}
}
This program reads lines from a file specified on the command line and prints them to standard
output. By using the full abilities of the
RWCString class it could be greatly simplified as
follows:
main(int argc, char* argv[]){
ifstream fstr(argv[1]);
RWCString line;
while (line.readLine(fstr)) {
cout << line;
}
}
There are countless other such examples. The point is, if it's looking awkward to you, most likely
there's a better way!