Dear all, I once took a curious look at D in the past (circa 2004), and also read the DM newsgroups at the time that Stroustrup frequently posted here.
Now, in 2010, I've been giving D 2.0 a second chance and I'm happy with it. Strings, dynamic arrays and hash tables couldn't be easier to use and the option of metaprogramming presents way more possibilities than C++. However, I have a few questions about syntax. 1) Operator overloading First of all, I find the operator overloading weird. This is because I'm used to C++'s syntax "operator+" and "operator+=", for example, instead of "opAdd" and "opAddAssign". While I understand that it gives plenty of room and freedom for introducing new operators in the future, it nonetheless feels less "natural", at the lack of a better word. C++ has a reserved keyword "operator" for this, why not using a modified syntax to this end in D? Why not using, for example, "operator(+)", "operator(+=)", or "operator(cast(real))"? This would be consistent with the simplified function template syntax, and make operator declarations easier to read (I find that reading the symbol itself is more intuitive when reading the source code). 2) Operators that change context when unary or binary I noticed that for example, "~this" denotes a class destructor (thank you for including GC AND making it optional, btw), meaning that the "~" operator is a negation when used as a unary operator. However, it becomes a binary concatenation operator when used with arrays/strings, which is completely unrelated to the other use. The same applies to templates: "!" is a logical negation operator when used as an unary operator, but it denotes a template when introduced in a function declaration, for example. This can be confusing for people learning the language, especially if it's a first or second programming language. There are a number of symbols that are not used at all and could just as easily be used. Why not use "@"? The fact that D does not use the C macro preprocessor means that "#" is available, for example. Thank you for taking the time to read my questions. Regards, F. Almeida
