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Update example (#2522)

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Victor Zverovich
2021-10-02 07:33:33 -07:00
parent 023c2018f7
commit 48a476ae0f
1 changed files with 7 additions and 7 deletions
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14
doc/api.rst
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@ -186,7 +186,9 @@ template and implement ``parse`` and ``format`` methods::
#include <fmt/format.h> #include <fmt/format.h>
struct point { double x, y; }; struct point {
double x, y;
};
template <> struct fmt::formatter<point> { template <> struct fmt::formatter<point> {
// Presentation format: 'f' - fixed, 'e' - exponential. // Presentation format: 'f' - fixed, 'e' - exponential.
@ -210,8 +212,7 @@ template and implement ``parse`` and ``format`` methods::
if (it != end && (*it == 'f' || *it == 'e')) presentation = *it++; if (it != end && (*it == 'f' || *it == 'e')) presentation = *it++;
// Check if reached the end of the range: // Check if reached the end of the range:
if (it != end && *it != '}') if (it != end && *it != '}') throw format_error("invalid format");
throw format_error("invalid format");
// Return an iterator past the end of the parsed range: // Return an iterator past the end of the parsed range:
return it; return it;
@ -222,10 +223,9 @@ template and implement ``parse`` and ``format`` methods::
template <typename FormatContext> template <typename FormatContext>
auto format(const point& p, FormatContext& ctx) -> decltype(ctx.out()) { auto format(const point& p, FormatContext& ctx) -> decltype(ctx.out()) {
// ctx.out() is an output iterator to write to. // ctx.out() is an output iterator to write to.
return format_to( return presentation == 'f'
ctx.out(), ? format_to(ctx.out(), "({:.1f}, {:.1f})", p.x, p.y)
presentation == 'f' ? "({:.1f}, {:.1f})" : "({:.1e}, {:.1e})", : format_to(ctx.out(), "({:.1e}, {:.1e})", p.x, p.y);
p.x, p.y);
} }
}; };