fieldfilterstruct.m

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function ResStruct=fieldfilterstruct(InpStruct,field2KeepList,isCheckField)
import mxberry.core.throwerror;
if nargin<3
    isCheckField=false;
end
if isempty(field2KeepList)
    ResStruct=InpStruct;
    return;
end
%
if ischar(field2KeepList)
    field2KeepList={field2KeepList};
end

initFieldList=fieldnames(InpStruct);
fieldList=setdiff(initFieldList,field2KeepList);
ResStruct=rmfield(InpStruct,fieldList);

if isCheckField
    isExist=ismember(field2KeepList,initFieldList);
    if ~all(isExist(:))
        indBad=find(~isExist,1,'first');
        throwerror('wrongFieldName',...
            'InpStruct does not contain %s field', field2KeepList{indBad});
    end
end