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| − | --[[User:BohdanKornienko|BohdanKornienko]] ([[User talk:BohdanKornienko|talk]]) 13:23, 16 October 2013 (PDT)
| + | #REDIRECT [[enwiki:Talk:Rust_(programming_language)]] |
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| − | Small example to use vector header:
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| − | {{c|#include <iostream>
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| − | #include <vector>
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| − | int main(int argc, char **argv)
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| − | {
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| − | std::vector<int> vec;
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| − | vec.insert(vec.begin(), 1);
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| − | vec.insert(vec.end(), 2);
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| − | vec.insert(vec.end(), 3);
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| − | vec.erase(vec.begin() + 1);
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| − | std::cout << "count: " << vec.size()
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| − | << "\ncapacity: " << vec.capacity() << std::endl;
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| − | return 0;
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| − | }
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| − | }}
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| − | == Pointer/iterator invalidation and vector::assign. ==
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| − | Does vector::assign invalidate iterators? It's not on the list, but I have to assume that if the new size blows the capacity, they have to be invalidated, right? What does the standard say about this?
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| − | : Neither the simplified summary here nor the actual page ({{lc|std::vector::assign}}) say anything about invalidation because the standard (Table 107 — Sequence container requirements) does not say anything about invalidation; it just says "Replaces elements ... with copies of". For input iterators, LLVM libc++ just calls [https://github.com/llvm-mirror/libcxx/blob/master/include/vector#L1372 clear and then a series of push_backs], obviously invalidating everything. GNU libstdc++ [https://github.com/gcc-mirror/gcc/blob/edd716b6b1caa1a5cb320a8cd7f626f30198e098/libstdc%2B%2B-v3/include/bits/vector.tcc#L249 is a little more careful] --[[User:Cubbi|Cubbi]] ([[User talk:Cubbi|talk]]) 12:09, 22 April 2016 (PDT)
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| − | :: If there's no wording anywhere, I think we'll need an LWG issue, because otherwise the blanket wording in [http://eel.is/c++draft/container.requirements.general#12 <nowiki>[container.requirements.general]/12</nowiki>] kicks in, which would be obviously wrong. [[User:T. Canens|T. Canens]] ([[User talk:T. Canens|talk]]) 14:41, 22 April 2016 (PDT)
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| − | :::Ah, it was implied by the old specification pre-[http://wg21.link/LWG2209 LWG2209], but that issue's resolution removed it. [[User:T. Canens|T. Canens]] ([[User talk:T. Canens|talk]]) 15:41, 24 April 2016 (PDT)
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| − | == Wrong description of operator[] ==
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| − | It currently describe operator[] as "access or insert specified element", which is incorrect, since std::vector::operator[] never inserts an element, unlike std::map::operator[]. This is because the description uses the standard operator_at template. I'd argue it's better to give a correct description. [[Special:Contributions/2620:0:105F:2:6169:A7F:B58D:284B|2620:0:105F:2:6169:A7F:B58D:284B]] 01:23, 29 January 2018 (PST)
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| − | : fixed --[[User:D41D8CD98F|D41D8CD98F]] ([[User talk:D41D8CD98F|talk]]) 01:29, 29 January 2018 (PST)
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| − | == The infamous vector<bool> ==
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| − | It's mentioned in the man page but not on any of the member pages.
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| − | Also, It would be nice if there was more on the main page explaining the limitations - In particular:
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| − | data() does not exist
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| − | and &v[0] is not a pointer to bool.
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| − | Just noticed that it has its own page but should still probably be referenced from some of the member pages
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| − | [[Special:Contributions/194.74.130.171|194.74.130.171]] 02:06, 19 April 2021 (PDT)
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| − | : In addition, {{tt|std::vector<bool>::resize}} has only one [https://timsong-cpp.github.io/cppwp/n4861/vector.bool overload]:
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| − | {{source|1=constexpr void resize(size_type sz, bool c = false);}}
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| − | whilst {{ltt|cpp/container/vector/resize|std::vector<T>::resize()}} has two [https://timsong-cpp.github.io/cppwp/n4861/vector overloads]:
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| − | {{source|1=
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| − | constexpr void resize(size_type sz);
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| − | constexpr void resize(size_type sz, const T& c);
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| − | }}
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| − | Thus, we need to {{todo|describe {{tt|std::vector<bool>::resize()}} separately.}}
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| − | : --[[User:Space Mission|Space Mission]] ([[User talk:Space Mission|talk]]) 05:43, 19 April 2021 (PDT)
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| − | == Rust ==
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| − | Yes [[Special:Contributions/2A03:E600:100:0:0:0:0:6|2A03:E600:100:0:0:0:0:6]] 21:39, 29 July 2023 (PDT)
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