On 10/11/23 19:24, Regina Henschel wrote:
How to write the map? In the past it would have been something like the
following:
static const std::map<OUString, std::vector<OUString>>
aConnectionSiteAngleMap{
{"accentBorderCallout1",{"0","cd4","cd2","3cd4"}},
...
{"wedgeRoundRectCallout",{"3cd4","cd2","cd4","0","cd4"}}
};
All strings are constants and neither the map nor the strings will ever
change.
How do I have to write it now?
You can keep writing it as above, or your could write it as
static const std::map<OUString, std::vector<OUString>>
aConnectionSiteAngleMap{
{u"accentBorderCallout1"_ustr,{u"0"_ustr,u"cd4"_ustr,u"cd2"_ustr,u"3cd4"_ustr}},
...
{u"wedgeRoundRectCallout"_ustr,{u"3cd4"_ustr,u"cd2"_ustr,u"cd4"_ustr,u"0"_ustr,u"cd4"_ustr}}
};
which is a bit more efficient as it doesn't need to construct the
OUString instances it runtime (but it still needs to construct the
std::vector and std::map instances at runtime).
(You can't write it as
static constexpr std::map<OUString, std::vector<OUString>>
aConnectionSiteAngleMap{
{u"accentBorderCallout1"_ustr,{u"0"_ustr,u"cd4"_ustr,u"cd2"_ustr,u"3cd4"_ustr}},
...
{u"wedgeRoundRectCallout"_ustr,{u"3cd4"_ustr,u"cd2"_ustr,u"cd4"_ustr,u"0"_ustr,u"cd4"_ustr}}
};
as std::map is not constexpr-ready in C++20, and neither is std::vector
in some standard library implementations, like in debug-mode libstdc++.)
