how to extract a value with a specific character out of an character array
6 次查看(过去 30 天)
显示 更早的评论
a great example to describe this would be for emails. Say we have an input of:
emails = 'someone, random@gmail, other'
how would one know to select the one with the @gmail and then add the .com to the end after?
If there are multiple emails in the array, only display the first one.
0 个评论
采纳的回答
DGM
2022-2-24
编辑:DGM
2022-2-24
I'm not sure which extra emails should be rejected. I'm going to assume that all other emails get rejected
emails = {'someone, random@gmail, backupaccount@yahoo, other';
'someone else, random2@hotmail, other'};
mailhost = regexp(emails,'@[^,]*','match');
mailhost1all = [mailhost{1}{1} '.com']
If instead there might be more than one email per entry in the emails array, and you only want the first email per entry in the array:
mailhost1each = cell(numel(emails),1);
for acct = 1:numel(emails)
mailhost1each{acct} = [mailhost{acct}{1} '.com'];
end
mailhost1each
3 个评论
Rik
2022-2-24
mailhost1each=strrep(mailhost1each,'@earthlink.com','@earthlink.net');
DGM
2022-2-25
Maybe something like this?
emails = {'someone, random@gmail, backupaccount@yahoo, other';
'someone else, random2@earthlink, other'};
% match the whole email address
mailaccounts = regexp(emails,'[^,\s]*?@[^,]*','match');
% these hosts should be .net
hasnettld = {'earthlink','comcast','airmail','charter'};
hasnettld = cellfun(@(x) ['@' x],hasnettld,'uniform',false);
firstmailaccounts = cell(numel(emails),1);
for acct = 1:numel(emails)
thisacct = mailaccounts{acct}{1};
if contains(thisacct,hasnettld)
firstmailaccounts{acct} = [thisacct '.net'];
else
firstmailaccounts{acct} = [thisacct '.com'];
end
end
firstmailaccounts
I'm sure this can be simplified, but I'm still not really sure what you want matched.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Web Services 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!