Must-know information about Swift

Sat, 25 May 2024 19:55:20 +0800

Must-know information about Swift

entry point

main?

print log

print("Hello swift")
let name = "swift"
print("Hello, \(name)")
print("Hello, \(name1 ?? name)")// If the optional value is missing, the default value is used instead.

Variable, Constant

Int:

On a 32-bit platform, Int is the same size as Int32.
On a 64-bit platform, Int is the same size as Int64.

UInt:

On a 32-bit platform, UInt is the same size as UInt32.
On a 64-bit platform, UInt is the same size as UInt64.

Double represents a 64-bit floating-point number.

Swift on Yaohong

Must-know information about Swift

Must-know information about Swift

entry point

print log

Variable, Constant