Swift-style-guide: syntax to use instead of c-style for loop

[icanzilb]

c-style for loops are getting sacked in Swift 3 and it's a good idea to comply as soon as possible.

swift collection types actually provide a list of their indexes no matter of the index type so I say we should use those across tutorials and books. E.g:

not preferred:
for var i=0;i<items.count;i++ { ..items[i]... }

preferred:
for i in items.indices { ... items[i] ... }

@micpringle ?

[JRG-Developer]

👍

I'm for avoiding using C-style loops.

However, this will already generate a warning in Xcode 7.3 if you use them.

As we already don't allow warnings, does this really need to be explicitly included?

[khalidmahmud]

the new loop looks great
but for the loop of this type what should be done?
for var i=0;i what are the possible way to implement this in
for .... in ?

[yas375]

@khalidmahmud

for i in 0.stride(to: items.count, by: 2) {
    // items[i]
}

[khalidmahmud]

@yas375
thanks bro

[rayfix]

Approved. Adding a section about compiler warnings being verboten. Also will change the current not preferred examples to use a while loop.

[rayfix]

Apologies that there might be some noise here. I guess I am learning the github pull request workflow. :)