cppitertools

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Update range() for additional features in python's range

5

Give a range object `r` - `r.start()`, `r.stop()`, and `r.stop()` constexpr member functions to match the `.start`, `.stop`, and `.step` properties. - `r.size()` and `r.length()` to match `len(r)` - `r[index]`

ryanhaining

vector<bool> and groupby

2

Hi I'm getting another strange behaviour: ``` vector v{true, true, false, false,false, true, true}; for (auto &&x: iter::groupby(v,[](auto b){return b;})) { cout

miguel-negrao

Can I get just the counts from combinations_with_replacement ?

1

I am interested in using this library to iterate over all "n multichoose k" possibilities for a multiset, but I am representing each set as a simple vector of counts,...

thehans

DO NOT SUBMIT. This is how far I got. Feel free to use any or all of this.

EricWF

Add compiler compatibility list

32

Can you please add the list of compatible compilers? VS 2013 does not support noexcept while VS 2015 finds "unknown size" errors everywhere. ``` Severity Code Description Project File Line...

B3rn475

[c++17] replace boost optional with std::optional in zip_longest

7

- update examples/zip_longest_examples.cpp to use structured bindings - update README example to use structured bindings

ryanhaining

Can't get cmake FetchContent to work

2

Hi, first thanks a lot for this amazing library. I'm trying to integrate this library as a dependency of my CMake project, but I can't get it to work the...

maxmarsc

C++ iterators basically model pointers. Hence a const pointer can still be dereferenced to a mutable object (`T * const` *not* `const T*`). This is not true for many iterators...

thomas001

Currently a lot iterators have only non-const `operator*` or `operator->` (for example in [groupby](https://github.com/ryanhaining/cppitertools/blob/add5acc932dea2c78acd80747bab71ec0b5bce27/groupby.hpp#L254)). This is not correct according to the legacy and C++20 iterator concepts: - [*LegacyInputIterator*](https://en.cppreference.com/w/cpp/named_req/InputIterator) states that...

thomas001

unique_everseen should be templated by a hash function and use a different set object

1

Currently we can't use unique_everseen for proto-buffs, or any element that doesn't have std::hash. Would make sense to make functions for which its relevant to be templated by equality and...

nimrodfg