Use for loop, (void) #11
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https://godbolt.org/z/W1oM15Evj I just made some test code things appear to still work. For loop can iterate and check the condition in the same line. https://blog.codeisc.com/2018/01/09/cpp-comma-operator-nice-usages.html https://blog.codeisc.com/2017/12/26/cpp-comma-operator-introduction.html https://stackoverflow.com/questions/39514765/the-void-the-comma-operator-operator-and-the-impossible-overloading https://youtu.be/AqDsso3S5fg?t=276 (void), comma operator can be overloaded. So you need to cast to void to force using the built-in comma operator. https://stackoverflow.com/questions/5853833/casting-non-const-to-const-in-c https://en.cppreference.com/w/cpp/utility/as_const I was worried that a pred could mutate the values as there was nothing to prevent this. As the Iterator needs to be mutable so you can iterate. The thing it points too may or may not be const. So someone could write a pred that mutates. Same with Op for transform. You don't want to mutate the incoming just the out going value.
Since the comma operator takes 2 parameters you don't need to cast all of them to void but at least 1. I'm being safe and since each one is called left to right and each call is it's own group of 2 I'm casting (void) on all but the first one. https://stackoverflow.com/questions/38357089/why-does-stdtransform-and-similar-cast-the-for-loop-increment-to-void
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Removing as const. As this isn't something the standard does. We aren't mutating the data but the caller might want to. |
I found that mutable lambda's can't be passed to the algorithms with const. fixes: codereport#13
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https://godbolt.org/z/rrnzhdoGn
I just made some test code things appear to still work.
Using for loop instead of while
For loop can iterate and check the condition in the same line.
Cast to void
(void), comma operator can be overloaded. So you need to cast to void to force using the built-in comma operator. I'm not sure you can defend against all uses of an overloaded comma operator. I'm not 100% sure when this is needed. So I used it in places where the return value isn't required. Like when you are iterating the iterators. Someone said it's a very uncommon overload and they only saw it used in boost. Though it can happen. std::transform uses the (void) cast.
Remove const
Mutable lambdas couldn't be passed to these functions. So we had to remove const
fixes: #13
Forwarding Ref
any_ofis passing the members directly to thefindfunction. I think it's better to forward anythingany_ofdoesn't use.I rewatched this talk for a refresher.