1 min readOct 17, 2018
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Tonia Tkachuk Thank you for your response.
Agree. !!
is a force to not null type and it will through an NPE if the variable is null whereas ?.
is a null check and it will proceed only if the value is not null.
Thank you for pointing this out in the post. I have changed it.
You can read about ?.
and !!
in details on the below link.