Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
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Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#2I know some of the arguments around C++/cpp2 are flawed, but I do love C++ and a project to move it forward with a step-change is exciting to me.
A few of my friends and I did Advent of Code in cpp2 this year and it was a (very buggy) blast.
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#3Sutter's 2022 cppcon talk¹ is a great introduction to the topic, both the problems it attempts to solve and solutions it was/is settling on. One of those few talks that left me genuinely enthused about the topic.
[It is probably worth watching for the Compiler Explorer interjection toward the end alone -- Matt Godbolt Appreciation Society]
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#4Like Kotlin to Java
Or ReScript to OCaml
Or Gleam to Erlang
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#5Is there any discussion or in-depth explanation of the syntax choices? I understand that a goal was context free unambiguous parsing. But there are some things that surprise me.
For example, string interpolation:
"Hello, (msg)$!\n"
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#6Is there any discussion or in-depth explanation of the syntax choices? I understand that a goal was context free unambiguous parsing. But there are some things that surprise me. For example, string interpolation: "Hello, (msg)$!\n" Why “(msg)$” and not “$(msg)”? Surely the latter is easier to parse?
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#7Like Kotlin to Java Or ReScript to OCaml Or Gleam to Erlang
Kotlin is a distinct language with new features that (I'm fairly sure) make it non-isomorphic to Java code though. But I can't speak on the others.
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#8Most of my personal issues aren't with C++ syntax as such (although it also has many problems). My main gripes are:
1. Very slow compilation.
2. Poor encapsulation, adding private functions requires recompiling all dependents, see (1).
3. Comically huge symbols make debugging much harder than it needs to be -- today gdb OOM'd my 16GB laptop when trying to form a backtrace of a typical QT application coredump.
Unfortunately it doesn't seem like cppfront can fix these issues. It may still be a worthwhile effort in other respects, of course.
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#9I wonder how this compares with Carbon -> C++ [0].
Carbon is (was?) a fantastic proposal, but not sure if it has lost steam since it was introduced or how well it is being adopted (be it inside Google or outside)?
Being able to incrementally/interchangeably use/call existing C++ code (and vice versa) seems like a great design choice (in Carbon) without having to introspect the actual generated code.
Not sure how easy it is to get the cppfront-generated C++ to bridge with existing C++ code (and vice versa)?
Re: Overview: What are Cpp2 and cppfront? How do I get and build cppfront?
#10Most of my personal issues aren't with C++ syntax as such (although it also has many problems). My main gripes are: 1. Very slow compilation. 2. Poor encapsulation, adding private functions requires recompiling all dependents, see (1). 3. Comically huge symbols make debugging much harder than it needs to be -- today gdb OOM'd my 16GB laptop when trying to form a backtrace of a typical QT application coredump. Unfortu…
under what circumstances does (2) hold? for vanilla methods it's no problem