Dear All,
Here is a kind of follow-up to the above question.
I now to try to read a list of strings and each of the values in the list must to be converted to an enum class type.
But I get the following compile time error when I try to compile below code snippet
"
: error: use of deleted function ‘static T dealii::Patterns::Tools::Convert<T, Enable>::to_value(const std::string&, const dealii::Patterns::PatternBase&) [with T = NonlinearSolverType; Enable = void; std::string = std::__cxx11::basic_string<char>]’
1829 | Convert<typename T::value_type>::to_value(str, *base_p));
"
I also tried playing around with the second template option "A" of the dealii::Patterns::Tools::Convert<T,A>() function but it did not help. I am not sure if this function is not yet instantiated to work for T = decltype(nonlinearSolverTypes_)? or am I make syntactical mistake in calling the function?
enum class NonlinearSolverType
{
NEWTON_STANDARD,
NEWTON_MODIFIED
};
using NonlinearSolverListType = std::vector<NonlinearSolverType>;
dealii::Patterns::List nonlinearSolverListPattern(
dealii::Patterns::MultipleSelection(
"NEWTON_STANDARD|NEWTON_MODIFIED"),
nMinListElems,
nMaxListElems,
"|");
const std::string nonlinearSolverTypesString = parameterHandler.get("Nonlinear solver types");
blockNonlinearSolverParameters_.nonlinearSolverTypes_ = dealii::Patterns::Tools::Convert<NonlinearSolverListType, typename std::enable_if<dealii::Patterns::Tools::is_list_compatible<NonlinearSolverListType>::value>::type>::to_value(nonlinearSolverTypesString, std::move(nonlinearSolverListPattern));
Some suggestions on resolving this issue will be really helpful.
Best regards,
Paras Kumar
On Monday, April 19, 2021 at 5:38:31 PM UTC+2 Wolfgang Bangerth wrote:
On 4/19/21 4:19 AM, Paras Kumar wrote:
>
> std::unique_ptr<dealii::Patterns::PatternBase> nItersListPattern(new
> dealii::Patterns::List(dealii::Patterns::Integer(1), 2, 8, "|"));
> nIters =
> dealii::Patterns::Tools::Convert<decltype(nIters)>::to_value(nMaxItersString,
> nItersListPattern);
I suspect you need to write this last line as
dealii::Patterns::Tools::Convert<decltype(nIters)>::to_value(nMaxItersString,
std::move(nItersListPattern));
but the idea seems right. I was using the latest development sources in which
the argument has been changed from a unique-ptr to just a regular object.
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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