On 11/10/2012 11:58 AM, Stephan Hennig wrote:
Am 09.11.2012 22:10, schrieb Hans Hagen:
On 11/9/2012 9:22 PM, Stephan Hennig wrote:

That is,

    node.insert_after(nil, N, x)

is not a short-cut for inserting after N, but returns x as new head?

no, it returns n as head as well as x:

    head, current = node.insert_after(nil,current,x)

boils down to

    head    = current
    current = x


But this is in contrast to what the manual says.

| If head is initially nil, it will become new.

new == assigned


so:

    head, current = node.insert_after(head,current,x)

becomes:

    head    = head or current or x
    current = x

All valuable additions to the manual ...

it's not a 'how to mess with linked lists, more a reference manual -)

Hans

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