Rosetta Code

Define a primitive data type: Difference between revisions

Page Discussion

Define a primitive data type (view source)

Revision as of 09:07, 21 November 2017

977 bytes removed ,  6 years ago
m
→‎{{header|Julia}}
Line 929:
add( s(1); s(2)) | pp # "smallint::3"
add( s(6); s(6)) # (nothing)</lang>
 
=={{header|Julia}}==
Julia has true, machine-optimized user defined primitives, but they are defined as contiguous groups of N bits. Thus, a user defined primitive in Julia can be a 3-bit unsigned value between 0 and 7 or a 4-bit one from 0 to 15, but 0 to 10 requires extra constraints in the constructor as below:
<lang julia>
mutable struct U10
Ulessthan11::UInt8
function U10(x=0)
this = new()
if x < 0 || x > 10
Base.throw("InexactError: U10 out of bounds, must be >= 0, <= 10")
end
this.Ulessthan11 = UInt8(x)
end
end
convert(U10, x) = U10(x)
 
a = U10(3)
b = U10(4.0)
c = 1
d = 3.5
f = U10(2)
g = U10(7)
h = U10()
arr = [ 1, f, a, b, 5]
arr[1] = a * f * h
arr[3] = 0
 
println(arr)
println("$a + $b = $(a+b)")
println("b * c = $(b*c)\n")
 
# no error, below, since arr[1] is quietly promoted to an Int:
arr[1] = b * a
println(arr)
 
# But a bounds error before printing here:
arr[4] = U10(b * a)
println(arr)
</lang>
 
=={{header|Kotlin}}==
Wherrera
4,107

edits

Retrieved from "https://rosettacode.org/wiki/Special:MobileDiff/26581"