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Define a primitive data type: Difference between revisions
Add swift
(Define a primitive data type en QBasic) |
(Add swift) |
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Line 2,282:
a *= 2 # a=6
say a+b # error: class `MyInt` does not match MyInt(12)</lang>
=={{header|Swift}}==
<lang swift>struct SmallInt {
var value: Int
init(value: Int) {
guard value >= 1 && value <= 10 else {
fatalError("SmallInts must be in the range [1, 10]")
}
self.value = value
}
static func +(_ lhs: SmallInt, _ rhs: SmallInt) -> SmallInt { SmallInt(value: lhs.value + rhs.value) }
static func -(_ lhs: SmallInt, _ rhs: SmallInt) -> SmallInt { SmallInt(value: lhs.value - rhs.value) }
static func *(_ lhs: SmallInt, _ rhs: SmallInt) -> SmallInt { SmallInt(value: lhs.value * rhs.value) }
static func /(_ lhs: SmallInt, _ rhs: SmallInt) -> SmallInt { SmallInt(value: lhs.value / rhs.value) }
}
extension SmallInt: ExpressibleByIntegerLiteral {
public init(integerLiteral value: Int) { self.init(value: value) }
}
extension SmallInt: CustomStringConvertible {
public var description: String { "\(value)" }
}
let a: SmallInt = 1
let b: SmallInt = 9
let c: SmallInt = 10
let d: SmallInt = 2
print(a + b)
print(c - b)
print(a * c)
print(c / d)
print(a + c)</lang>
{{out}}
<pre>10
1
10
5
Runner/main.swift:17: Fatal error: SmallInts must be in the range [1, 10]
Illegal instruction: 4</pre>
=={{header|Tcl}}==
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