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| author | Leah Neukirchen <leah@vuxu.org> | 2017-12-05 18:19:55 +0100 |
|---|---|---|
| committer | Leah Neukirchen <leah@vuxu.org> | 2017-12-05 18:19:55 +0100 |
| commit | 25ec91e725bdf495722034a0331c77d45ab9b266 (patch) | |
| tree | f2e8bcd9fdb734facea637b34f9374596dc7e255 | |
| parent | dff16e900f2dd3e9e257a015d22bec6b73529cc7 (diff) | |
| download | adventofcode2017-25ec91e725bdf495722034a0331c77d45ab9b266.tar.gz adventofcode2017-25ec91e725bdf495722034a0331c77d45ab9b266.tar.xz adventofcode2017-25ec91e725bdf495722034a0331c77d45ab9b266.zip | |
day03: use a proper C++17 sentinel value for infinity
| -rw-r--r-- | day03.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/day03.cc b/day03.cc index efaffc0..fef7c92 100644 --- a/day03.cc +++ b/day03.cc @@ -7,6 +7,7 @@ using namespace std; class SpiralIterator : public std::iterator<std::input_iterator_tag, int> { + struct SpiralInfinity { }; public: pair<int, int> p; int i, j, d; @@ -15,8 +16,8 @@ public: { } auto begin() { return *this; } - auto end() { return SpiralIterator{}; } - bool operator!=(SpiralIterator &) const { return true; } // infinite + auto end() { return SpiralInfinity{}; } + bool operator!=(SpiralInfinity) const { return true; } // infinite auto operator*() { return p; } auto operator++() { |