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how to get values from a struct

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Li Xue
Li Xue 2017-7-14
编辑： Li Xue 2017-7-15
How to get values from a struct for a list of keys?
For example, I have a struct:
my_key={'key1', 'key2', 'key3'};
value = {[1 2], [3 4], [5 6]};
s=cell2struct(value,my_key,2);
How can I extract values for query={'key1','key3'}?
s.(query) does not work. I am trying to avoid loops.

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采纳的回答

Stephen23
Stephen23 2017-7-15
编辑：Stephen23 2017-7-15
"How can I extract values for query={'key1','key3'}?"
cellfun(@(f)s.(f), query, 'uni',0)
or using getfield, something like:
getfield(s,{':'}, query{:}, {':'})

更多回答（1 个）

Image Analyst
Image Analyst 2017-7-14
Try this:
my_key={'key1', 'key2', 'key3'}
value = {[1 2], [3 4], [5 6]}
s=struct(my_key{1}, value{1}, my_key{2}, value{2}, my_key{3}, value{3})
% Look to see if key2 is [3, 4]
if isequal(s.key2, [3,4])
msgbox('It is');
else
msgbox('It is not');
end

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