On 28/12/11 1:27 PM, bearophile wrote:
Peter Alexander:
Any time you want to create a string without allocating memory.
char[N] buffer;
// write into buffer
// try to use buffer as string
I have discussed a bit two or three times about this topic. In a post I even did suggest
the idea of "scoped immutability", that was not appreciated. Generally creating
immutable data structures is a source of troubles in all languages, and in D it's not a
much solved problem yet.
In D today you are sometimes able to rewrite that as:
string foo(in int n) pure {
auto buffer = new char[n];
// write into buffer
return buffer;
}
void bar(string s) {}
void main() {
string s = foo(5);
bar(s); // use buffer as string
}
Bye,
bearophile
That only works when you allocate memory for the string, which is what I
would like to avoid.
