[Lazarus] use of function ExtractWord

[Michael Van Canneyt]

On Tue, 15 Sep 2015, John Landmesser wrote:

> Hi,
>
> Example:
>
> given a string:
>
> str := '2015-09-14 14:46:50  downloadrate  (813 KB/s)'
>
> if i want to get the first word ( worddelim is space ) i use:
>
> Result := ExtractWord(1 ,str,['  ']);
>
> Result is '2015-09-14'
>
> That's clear :-))
>
> But!
>
> If i want to extract '(813 KB/s)', i have to extract the SECOND word!!
>
> Result := ExtractWord(2 ,str,['( ', ')']);
>
> Result is '813 KB/s'
>
> My question:
>
> Why do i have to extract the SECOND word? The word inside () occurs just 
> once!

Because you cannot specify separate begin and end separator, just 'separators'.
( is a separator, so everything before ( is the first word.
if you specify ( ) as separators, there are 3 positions in the text:
before (, between ( and ) and after ).
(the last one is empty)

Michael.