101 lines
1.2 KiB
Markdown
101 lines
1.2 KiB
Markdown
# Declaration
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## No parameters, no return
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```thp
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fun say_hello()
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{
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print("Hello")
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}
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say_hello()
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```
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## With return type
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```thp
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fun get_random_number() -> Int
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{
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Random::get(0, 35_222)
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}
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let number = get_random_number()
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```
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## With parameters and return type
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```thp
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fun get_secure_random_number(Int min, Int max) -> Int
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{
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Random::get_secure(min, max)
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}
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let number = get_secure_random_number(0, 65535)
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```
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## Generic types
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```thp
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fun get_first_item[T](Array[T] array) -> T
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{
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array[0]
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}
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let first = get_first_item[Int](numbers)
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// The type annotation is optional if the compiler can infer the type
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let first = get_first_item(numbers)
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```
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## Signature
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```thp
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() -> ()
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() -> Int
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(Int, Int) -> Int
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[T](Array[T]) -> T
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```
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## Named arguments
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```thp
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fun html_special_chars(
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String input,
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Int? flags,
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String? encoding,
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Bool? double_encoding,
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) -> String
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{
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// ...
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}
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html_special_chars(input, double_encoding: false)
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```
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TBD: If & how named arguments affect the order of the parameters
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## Named arguments with different names
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```thp
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fun greet(
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String name,
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String from: city,
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)
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{
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print("Hello {name} from {city}!")
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}
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greet(name: "John", from: "LA")
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```
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