Re: [Dev-C++] FW: What does this mean ?

[Daniel G. <sp...@ho...>]

(MegacoParser *) is a typecast. What it means is that on the line

if (currentParser == (MegacoParser *)0)

currentParser is checked against the value of 0 AS IF IT WAS A POINTER TO 
TYPE MegacoParser.

Why this cast is in there I don't know, as 0 is 0 anywhere surely?

That's what I reckon anyway.




>From: Somanathan Kaimal <som...@wi...>
>To: "'dev...@li...'" 
><dev...@li...>
>Subject: [Dev-C++] FW: What does this mean ?
>Date: Thu, 20 Mar 2003 16:27:49 +0530
>
>Hi Techies,
>
>if (!currentParser)
>     currentParser = parserList.getInstance();
>
>** if (currentParser == (MegacoParser *)0)
>    {
>     SWERR  aSwerr;
>     aSwerr.record(__FILE__, __LINE__, "Error: No Parser available.");
>     return MegacoDefs::fail;
>    }
>
>
>
>How does the line marked with * different from
>
>If(currentParser == 0)
>
>Thanks in adv
>Somanathan
>


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