search for: literal2

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2015 Jun 18
1
Improving string concatenation
...ity. And of course, as someone else mentioned, it may instead be desirable for attempts to add strings to signal an error, as at present, which one also gives up by making "+" do concatenation. > Yes, even Fortran has one, and in C, I can simply write "literal1" > "literal2" and they'll be concatenated. It is only for literals, but > still very useful. Concatenation of literal strings could easily be added to the R parser without changing anything else. (Getting them to deparse as the same two pieces would be tricky, but is maybe not necessary.) Radf...
2015 Jun 17
1
Improving string concatenation
Just to clarify, primitive (C-level) generics do not support dispatch on basic classes (like character). This is for performance (no need to consider dispatch on non-objects) and for sanity (in general, redefining fundamental behaviors is dangerous). It is of course possible to define a "+" method with a signature containing a class not in the set of basic classes. On Tue, Jun 16, 2015