47 lines
1.0 KiB
Plaintext
47 lines
1.0 KiB
Plaintext
In Swift it is possible to add underscores ('_') to numeric literals to enhance readability. The addition of underscores in this manner has no semantic meaning, but makes it easier for maintainers to understand the code.
|
|
|
|
|
|
The number of digits to the left of a decimal point needed to trigger this rule varies by base.
|
|
|
|
[frame=all]
|
|
[cols="^1,^1"]
|
|
|===
|
|
|Base| Minimum digits
|
|
|
|
|binary| 9
|
|
|decimal| 6
|
|
|octal| 9
|
|
|hexadecimal| 9
|
|
|===
|
|
|
|
== Noncompliant Code Example
|
|
|
|
----
|
|
let i = 10000000 // Noncompliant; is this 10 million or 100 million?
|
|
let j = 0b01101001010011011110010101011110 // Noncompliant
|
|
let l = 0x7fffffffffffffff // Noncompliant
|
|
----
|
|
|
|
== Compliant Solution
|
|
|
|
----
|
|
let i = 10_000_000
|
|
let j = 0b01101001_01001101_11100101_01011110
|
|
let l = 0x7fff_ffff_ffff_ffff
|
|
----
|
|
|
|
ifdef::env-github,rspecator-view[]
|
|
|
|
'''
|
|
== Implementation Specification
|
|
(visible only on this page)
|
|
|
|
include::../message.adoc[]
|
|
|
|
'''
|
|
== Comments And Links
|
|
(visible only on this page)
|
|
|
|
include::../comments-and-links.adoc[]
|
|
endif::env-github,rspecator-view[]
|