>
>
> Volker,
>
>>>Hard to understand what you do not understand, i hope i do it:
>>>The focus is here
>>>copy/part B back tail b
>>>not here:
>>>copy/part b BACK TAIL B
>
>>>copy B
>>>return a copy of the series on position b.
>>>copy/part B back tail b
>>>returns a copy of the series on the position b, but not upto end, but 
>>>upto
>>>back tail b
>
> ... yes , and what does the last BACK TAIL B evaluates to? an INDEX
> position?
>
>
>
> Simply restated, I would like to understand why BACK TAIL B used alone 
> like
> here:
>
>>>BACK TAIL B
>
> returns a series
>
> while when used in:
>
>>>copy/part b BACK TAIL B
>
> it returns a number. (I assume it returns a number because this is what
> COPY/PART needs as a second argument)
>

It doesn't return a number -

>> ? copy
USAGE:
    COPY value /part range /deep

DESCRIPTION:
     Returns a copy of a value.
     COPY is an action value.

ARGUMENTS:
     value -- Usually a series (Type: series port bitset)

REFINEMENTS:
     /part -- Limits to a given length or position.
         range -- (Type: number series port pair) <-- 
     /deep -- Also copies series values within the block.

It returns a the same series at a different index.  The error
message that copy/part gives isn't completely correct...

"count" (below) gives the impression that it needs to be a
number, but it doesn't.

>> copy/part {a b c} {b} ;It looks like this should work...
** Script Error: Invalid /part count: b
** Near: copy/part "a b c" "b"
>> X: "a b c"
== "a b c"
>> copy/part X find X {b} ;But what it wants is part of the same series
== "a " 

-- 
To unsubscribe from the list, just send an email to 
lists at rebol.com with unsubscribe as the subject.

Reply via email to