Naming convention for id

Using Swift
1

Hi,

I often have id columns and confused whether to use bookID or bookId?

It is a new swift project.

2

Swift style is to upper case initialisms, whether an acronym or abbreviation. So it’s ID. It also keeps pronounced acronyms uppercase, like NASA, like in American English.

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3

Thank you so much for that clarification. such a relief to know bookID style is preferred.

I am assuming it is ok to use let id = UUID()as variable names start with lowercase.

Is there any Swift / Apple API using such style or any mention of it in the Swift API guidelines?

4

This is what I would do, but not all Apple APIs do this, e.g. the enum case UUIDAttributeType. (The other members of that enum start with a lowercase letter.)

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5

I think ID is the only initialism that is an abbreviation instead of an alphabetism. Is there another?

6

bookId and updateRestApiUrl are the preferred style

7

Here are the API Design Guidelines, under “Follow case conventions”

Acronyms and initialisms that commonly appear as all upper case in American English should be uniformly up- or down-cased according to case conventions

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8

Thanks a lot @jjatie was very helpful, just quoting the relevant text:

Acronyms and initialisms that commonly appear as all upper case in American English should be uniformly up- or down-cased according to case conventions:

var utf8Bytes: [UTF8.CodeUnit]
var isRepresentableAsASCII = true
var userSMTPServer: SecureSMTPServer