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import std.stdio;
ubyte[] extend(in uint[] arr)
{
ubyte[] result;
foreach (n; arr)
{
if (n < 10)
{
result ~= cast(ubyte)n;
// source/app.d(10,11): Error: cannot append type const(uint) to type ubyte[]
}
else
{
import std.conv : to;
foreach (digit; n.to!string)
{
result ~= cast(ubyte)(digit - '0');
}
}
}
return result;
}
unittest
{
import std.algorithm : equal;
assert(extend([1, 25, 70, 0]).equal([1, 2, 5, 7, 0, 0]));
}