5 ms·

That about wanting to change mind... it touches a string! Somehow the let-downs must have been too much for me at a certain point in time. That being said, I'm

That about wanting to change mind... it touches a string! Somehow the let-downs must have been too much for me at a certain point in time. That being said, I'm curious to find out right now. Edit... no such thing found as string interpolation in cpp, at least not in my first 4 search hits. I'll crawl back.

Conscat 3y ago
String interpolation is currently blocked by: - template-function parameters (NTTPs with a function parameter syntax rather than a template parameter syntax, tentatively spelled as `void foo(template int constant){}` ) - Scalable reflection, in combination with expansion statements (likely in C++26, spelled `template for (auto& e : array) {}` ) which would allow you to write an arbitrary parser for the template string into real C++ code. Reflection targets C++29. Syntax2 already supports string interpolation as a special compiler feature.
coldtea 3y ago
std::string formatted_str = std::format( "My name is {} and my favorite number is {}", name, num);
- 0xffff2 3y ago
  That's really nothing like python strings, which for the same string would be formatted_str = f"My name is {name} and my favorite number is {num}" The function call I could forgive, but the the ability to embed arbitrary python expressions into the f-string directly is a huge readability win IMO.
  - interroboink 3y ago
    Meanwhile Perl's over here like "we had this in the 90s!" (: eg: perl -e '$x="AAA"; print "lowercase: ${\( lc($x) )}\n"'
    - gpderetta 3y ago
      Of course posix shells gad that even before. How far we can go? What's the first language that had something that resembles string interpolation?
      - interroboink 3y ago
        I'm sure someone here can say something about Lisp machines (:
    - coldtea 3y ago
      Well, if that's the syntax, I'd rather not have it!
  - coldtea 3y ago
    That type of interpolation is something most non-scripting languages don't have anyway, and it took Python several decades to get it, and only has had it in the 5 years or so.

Conscat 3y ago

String interpolation is currently blocked by: - template-function parameters (NTTPs with a function parameter syntax rather than a template parameter syntax, tentatively spelled as `void foo(template int constant){}` ) - Scalable reflection, in combination with expansion statements (likely in C++26, spelled `template for (auto& e : array) {}` ) which would allow you to write an arbitrary parser for the template string into real C++ code. Reflection targets C++29. Syntax2 already supports string interpolation as a special compiler feature.

coldtea 3y ago

std::string formatted_str = std::format( "My name is {} and my favorite number is {}", name, num);

0xffff2 3y ago
That's really nothing like python strings, which for the same string would be formatted_str = f"My name is {name} and my favorite number is {num}" The function call I could forgive, but the the ability to embed arbitrary python expressions into the f-string directly is a huge readability win IMO.
- interroboink 3y ago
  Meanwhile Perl's over here like "we had this in the 90s!" (: eg: perl -e '$x="AAA"; print "lowercase: ${\( lc($x) )}\n"'
  - gpderetta 3y ago
    Of course posix shells gad that even before. How far we can go? What's the first language that had something that resembles string interpolation?
    - interroboink 3y ago
      I'm sure someone here can say something about Lisp machines (:
  - coldtea 3y ago
    Well, if that's the syntax, I'd rather not have it!
- coldtea 3y ago
  That type of interpolation is something most non-scripting languages don't have anyway, and it took Python several decades to get it, and only has had it in the 5 years or so.