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tkoeppe merged 4 commits into from
Aug 25, 2022
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[ranges] Improve examples #5791

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42b3fdd
[ranges] Improve example
hewillk Aug 24, 2022
178b094
Update source/ranges.tex
hewillk Aug 24, 2022
a7f9ddc
Update source/ranges.tex
hewillk Aug 24, 2022
9357796
Update source/ranges.tex
hewillk Aug 24, 2022
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20 changes: 10 additions & 10 deletions source/ranges.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -2201,11 +2201,11 @@
\begin{example}
\begin{codeblock}
template<bool YieldElements>
std::generator<any> f(std::ranges::@\libconcept{input_range}@ auto&& r) {
generator<any> f(ranges::@\libconcept{input_range}@ auto&& r) {
if constexpr (YieldElements)
co_yield std::ranges::elements_of(r); // yield each element of \tcode{r}
co_yield ranges::elements_of(r); // yield each element of \tcode{r}
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else
co_yield r; // yield \tcode{r} as a single value
co_yield r; // yield \tcode{r} as a single value
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}
\end{codeblock}
\end{example}
Expand Down Expand Up @@ -3825,7 +3825,7 @@
\begin{example}
\begin{codeblock}
auto ints = istringstream{"0 1 2 3 4"};
ranges::copy(ranges::istream_view<int>(ints), ostream_iterator<int>{cout, "-"});
ranges::copy(views::istream<int>(ints), ostream_iterator<int>{cout, "-"});
// prints \tcode{0-1-2-3-4-}
\end{codeblock}
\end{example}
Expand Down Expand Up @@ -5919,7 +5919,7 @@
\begin{codeblock}
auto input = istringstream{"0 1 2 3 4 5 6 7 8 9"};
auto small = [](const auto x) noexcept { return x < 5; };
auto small_ints = istream_view<int>(input) | views::take_while(small);
auto small_ints = views::istream<int>(input) | views::take_while(small);
for (const auto i : small_ints) {
cout << i << ' '; // prints \tcode{0 1 2 3 4}
}
Expand Down Expand Up @@ -14251,9 +14251,9 @@
\pnum
\begin{example}
\begin{codeblock}
std::vector<int> v { 0, 1, 2 };
vector<int> v { 0, 1, 2 };
for (auto&& [a, b, c] : views::cartesian_product(v, v, v)) {
std::cout << a << ' ' << b << ' ' << c << '\n';
cout << a << ' ' << b << ' ' << c << '\n';
}
// The above prints
// \tcode{0 0 0}
Expand Down Expand Up @@ -15003,14 +15003,14 @@
is successively produced as an element of the sequence.
\begin{example}
\begin{codeblock}
std::generator<int> ints(int start = 0) {
generator<int> ints(int start = 0) {
while (true)
co_yield start++;
}

void f() {
for (auto i : ints() | std::views::take(3))
std::cout << i << ' '; // prints \tcode{0 1 2}
for (auto i : ints() | views::take(3))
cout << i << ' '; // prints \tcode{0 1 2}
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}
\end{codeblock}
\end{example}
Expand Down