December 2001
Intermediate to advanced
416 pages
8h 16m
English
Content preview from C# Primer: A Practical ApproachBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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3.11. Overriding the Virtual Object Methods
The second issue in the design of a derived class revolves around the three virtual methods that every class implicitly inherits from Object. Recall that by default, ToString() prints out the name of the class. It is generally more useful for a class to display a representation of its internal state. For example, here is the ToString() implementation of our OrQuery class (the lparen and rparen members keep track of any parentheses associated with the query):
override public string ToString() { StringBuilder sb = new StringBuilder( 8 ); if ( m_lparen != 0 ) gen_lparen( ref sb, m_lparen ); sb.Append( m_lop.ToString() ); sb.Append( " || " ); sb.Append( m_rop.ToString() ); if ( m_rparen != 0 ) gen_rparen( ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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