diff options
Diffstat (limited to 'absl/strings/str_join.h')
| -rw-r--r-- | absl/strings/str_join.h | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/absl/strings/str_join.h b/absl/strings/str_join.h index 33534536..ee5ae7ef 100644 --- a/absl/strings/str_join.h +++ b/absl/strings/str_join.h @@ -72,21 +72,15 @@ ABSL_NAMESPACE_BEGIN // functions. You may provide your own Formatter to enable `absl::StrJoin()` to // work with arbitrary types. // -// The following is an example of a custom Formatter that simply uses -// `std::to_string()` to format an integer as a std::string. -// -// struct MyFormatter { -// void operator()(std::string* out, int i) const { -// out->append(std::to_string(i)); -// } -// }; -// -// You would use the above formatter by passing an instance of it as the final -// argument to `absl::StrJoin()`: -// -// std::vector<int> v = {1, 2, 3, 4}; -// std::string s = absl::StrJoin(v, "-", MyFormatter()); -// EXPECT_EQ("1-2-3-4", s); +// The following is an example of a custom Formatter that uses +// `absl::FormatDuration` to join a list of `absl::Duration`s. +// +// std::vector<absl::Duration> v = {absl::Seconds(1), absl::Milliseconds(10)}; +// std::string s = +// absl::StrJoin(v, ", ", [](std::string* out, absl::Duration dur) { +// absl::StrAppend(out, absl::FormatDuration(dur)); +// }); +// EXPECT_EQ("1s, 10ms", s); // // The following standard formatters are provided within this file: // |