Swift Learning NOTE 1---variables and tuples

It feels like a basic grammar and JS.

But the biggest difference is that Swift is a strong type of language, and I personally agree with the strong type, because if the type is prone to hidden bugs that are hard to spot, it is very much in favor of Apple's approach.

Therefore, according to the characteristics of strong type, it can be very natural to derive a lot of differences, such as with A=1;if (a) {println ("It is true");} Such statements will be swfit in the error, it is rightfully true, A is not a Boolean type, this is very sensible practice.

In addition, the concept of tuples can be a good solution to the function to return a number of different types of data, the individual is great.

Just started to learn, feel like Swift

Strive for later let Swfit become my main force!

Swift Learning NOTE 1---variables and tuples