Re: range.put() to Empty Array Causes Error?

[Steven Schveighoffer via Digitalmars-d-learn]

On 6/17/18 7:07 AM, Vijay Nayar wrote:
This code breaks with the following error:
void main()
{
     import std.range;
       int[] vals = [];
     vals.put(3);
}
/src/phobos/std/range/primitives.d(2328): Attempting to fetch the front 
of an empty array of int

The following code has no error:
void main()
{
     import std.range;
       int[] vals = [1];
     vals.put(3);
}

Why is range.put() not allowed for empty arrays?



range.put fills an existing array like a buffer, it does not append (as 
I'm guessing you are expecting). Use std.array.Appender to get append 
behavior.

BTW, use put(vals, 3) instead of vals.put(3), as you may bypass the 
features of put.

-Steve