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format_spec for elements in range formatting #1599

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rbrugo opened this issue Mar 20, 2020 · 1 comment
Closed

format_spec for elements in range formatting #1599

rbrugo opened this issue Mar 20, 2020 · 1 comment

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@rbrugo
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rbrugo commented Mar 20, 2020

I can't find a way to apply format_spec to ranges elements.
For example, the following code throws:

fmt::format("{:.1}", std::vector{1.11, 2.22}) == "{1.1, 2.2}"

There is a way to achieve this?
@vitaut
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vitaut commented Mar 20, 2020

You can do this with fmt::join:

fmt::print("[{:.1}]", fmt::join(std::vector{1.11, 2.22}, ", "));

This prints [1.0, 2.0].

@vitaut vitaut closed this as completed Mar 20, 2020
gsjaardema added a commit to gsjaardema/fmt that referenced this issue Aug 13, 2020
@gsjaardema
Eliminate shadowed variable warnings on intel
b7cc87d 
The intel-19 compiler warns about hidden variables:
```
/s/dev/nightly/libraries/ioss/src/fmt/format.h(2689): warning fmtlib#1599: declaration hides variable "begin" (declared at line 2668)
      FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) {
                                                ^
          detected during:
            instantiation of "Context::iterator fmt::v7::vformat_to<ArgFormatter,Char,Context>(ArgFormatter::iterator, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<Context>, fmt::v7::detail::locale_ref) [with ArgFormatter=fmt::v7::detail::arg_formatter<fmt::v7::detail::buffer_appender<char>, char>, Char=char, Context=fmt::v7::format_context]" at line 3492
            instantiation of "fmt::v7::detail::buffer_appender<Char> fmt::v7::detail::vformat_to(fmt::v7::detail::buffer<Char> &, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<fmt::v7::basic_format_context<fmt::v7::detail::buffer_appender<fmt::v7::type_identity_t<Char>>, fmt::v7::type_identity_t<Char>>>) [with Char=char]" at line 1413 of "/s/dev/nightly/libraries/ioss/src/fmt/format-inl.h"

/s/dev/nightly/libraries/ioss/src/fmt/format.h(2689): warning fmtlib#1599: declaration hides variable "end" (declared at line 2669)
      FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) {
                                                                   ^
          detected during:
            instantiation of "Context::iterator fmt::v7::vformat_to<ArgFormatter,Char,Context>(ArgFormatter::iterator, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<Context>, fmt::v7::detail::locale_ref) [with ArgFormatter=fmt::v7::detail::arg_formatter<fmt::v7::detail::buffer_appender<char>, char>, Char=char, Context=fmt::v7::format_context]" at line 3492
            instantiation of "fmt::v7::detail::buffer_appender<Char> fmt::v7::detail::vformat_to(fmt::v7::detail::buffer<Char> &, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<fmt::v7::basic_format_context<fmt::v7::detail::buffer_appender<fmt::v7::type_identity_t<Char>>, fmt::v7::type_identity_t<Char>>>) [with Char=char]" at line 1413 of "/s/dev/nightly/libraries/ioss/src/fmt/format-inl.h"
```
Rename the second set of variables to `pbegin` and `pend` to eliminate warning.
vitaut pushed a commit that referenced this issue Aug 14, 2020
@gsjaardema
Eliminate shadowed variable warnings on intel (#1816)
76e97dc 
The intel-19 compiler warns about hidden variables:
```
/s/dev/nightly/libraries/ioss/src/fmt/format.h(2689): warning #1599: declaration hides variable "begin" (declared at line 2668)
      FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) {
                                                ^
          detected during:
            instantiation of "Context::iterator fmt::v7::vformat_to<ArgFormatter,Char,Context>(ArgFormatter::iterator, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<Context>, fmt::v7::detail::locale_ref) [with ArgFormatter=fmt::v7::detail::arg_formatter<fmt::v7::detail::buffer_appender<char>, char>, Char=char, Context=fmt::v7::format_context]" at line 3492
            instantiation of "fmt::v7::detail::buffer_appender<Char> fmt::v7::detail::vformat_to(fmt::v7::detail::buffer<Char> &, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<fmt::v7::basic_format_context<fmt::v7::detail::buffer_appender<fmt::v7::type_identity_t<Char>>, fmt::v7::type_identity_t<Char>>>) [with Char=char]" at line 1413 of "/s/dev/nightly/libraries/ioss/src/fmt/format-inl.h"

/s/dev/nightly/libraries/ioss/src/fmt/format.h(2689): warning #1599: declaration hides variable "end" (declared at line 2669)
      FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) {
                                                                   ^
          detected during:
            instantiation of "Context::iterator fmt::v7::vformat_to<ArgFormatter,Char,Context>(ArgFormatter::iterator, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<Context>, fmt::v7::detail::locale_ref) [with ArgFormatter=fmt::v7::detail::arg_formatter<fmt::v7::detail::buffer_appender<char>, char>, Char=char, Context=fmt::v7::format_context]" at line 3492
            instantiation of "fmt::v7::detail::buffer_appender<Char> fmt::v7::detail::vformat_to(fmt::v7::detail::buffer<Char> &, fmt::v7::basic_string_view<Char>, fmt::v7::basic_format_args<fmt::v7::basic_format_context<fmt::v7::detail::buffer_appender<fmt::v7::type_identity_t<Char>>, fmt::v7::type_identity_t<Char>>>) [with Char=char]" at line 1413 of "/s/dev/nightly/libraries/ioss/src/fmt/format-inl.h"
```
Rename the second set of variables to `pbegin` and `pend` to eliminate warning.
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@vitaut @rbrugo