Searching data inside struct fields ?
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I have struct and i need i need to search inside it how can i make this ? let's say i have struct contains fields ID, name and class i need when i get ID from user not accept it if it's found before.
Thanks In advance.
回答（1 个）
Walter Roberson
2018-1-20
if ismember(proposed_id, {structname.ID})
It was a duplicate
else
It did not occur before
end
If the ID are numeric change from {} to []
4 个评论
Mohammed kandeel
2018-1-20
Mohammed kandeel
2018-1-20
This code
class.ID=1;
class.ID=2;
class.ID=3;
simply overwrites the field ID with each line, and so defines just one single scalar structure with one field. It is equivalent to:
class.ID=3;
What are you actually trying to achieve? You might need to read about non-scalar structures:
Mohammed kandeel
2018-1-20
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2018-1-20
2018-1-20
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