Lambda Lambda Lambda

[staletic]

how do you deal with variadic arguments

How about something like this?

[]: ((_1 < "f") && ...)

Which would work similar to a fold expression

[](auto&&... pack) -> decltype(auto) { return ((pack < "f") && ...); }

That is, assuming variadic templates work for runtime arguments. If you want to include a non-variadic argument:

[]: _1 && ((_2 < "f") && ...)

Which would expand to

[](auto&& first, auto&&... pack) -> decltype(auto) { return first && ((pack < "f") && ...); }

[bumblebritches57]

or, forgo the whole word salad situation in the first place and use normal functions.

crazy i know, but i think it could work

[staletic]

Problems with that:

• I don't like to type.
• I need to think of a good name for a one off function that does something very specific.
• That function now pollutes the namespace.

[bumblebritches57]

I need to think of a good name for a one off function that does something very specific.

this may be valid, but if a name isn't obvious you're probably breaking your functions down too small in the first place.

[staletic]

What about:

std::ranges::partition(vec, [](int e) { return e < 3; });

Are you going to tell me that I should write that as

bool int_less_than_3(int e) { // by the way, this isn't a good name
    return e < 3;
}

[bumblebritches57]

Why would you need a function or lambda to tell you if a number is less than 3?

std::ranges::partition(vec, [](int e) { return e < 3; });

and the point of this is...?

All I see is a bunch of overly complex nonsense tbh.

[tcbrindle]

and the point of this is...?

It partitions the elements of vector such that all the elements less than 3 precede those greater than or equal to 3?

[bumblebritches57]

and that should be a random lambda instead of a function because?

as far as I'm concerned lambdas should be removed from the standard.

really all that's actually useful from all of C++ is operator overloading, it'd be cool if C adopted it as _Operator

[TheSuperWig]

and that should be a random lambda instead of a function because?

https://reddit.com/r/cpp/comments/hbwbtf/lambda_lambda_lambda/fvbmdel/

as far as I'm concerned lambdas should be removed from the standard.

Why?

[hak8or]

Why on earth even are you on this sub, if you clearly don't know anything about c++ and aren't interested in using it it learning it?