a = 'test'
b = nil
c = a and b
d = (a and b)
e = a && b
f = (a && b)
p(c) # "test"
p(d) # nil
p(e) # nil
p(f) # nil
01.08.19 20:33 Гарант по WMR: We hereby notify you that the agreements on
servicing R-purses that you entered into earlier are no longer considered valid
due to the changes in the legislation of the Russian Federation and the
Regulator of the accounting instrument requirements and, therefore, we
suggest that you may either pay electronic bearer cheques through the
bank-payer ( https://check.srp.ru ), or agree with the use of the
R-purse under the terms of the ITV Agreement ( https://www.webmoney.ru/eng/legal/garants/wmr.shtml ).
The Agreement will be considered accepted by you
if there is no action taken on presenting your cheque
(R-purse) for payment within 30 days from the date of receipt of this notice.
R-purses for which the obligations were carried out
(zero balance) will be transferred to the System archive;
transaction report is available via the service https://report.web.money.
You can find more explanations of certain questions here ( https://link.web.money/ZIXqi ).