Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!uunet!taumet!steve
From: steve@taumet.com (Stephen Clamage)
Newsgroups: comp.lang.c++
Subject: Re: Initializing an array class member?
Keywords: initializers constructors
Message-ID: <586@taumet.com>
Date: 5 Feb 91 17:27:10 GMT
References: <1991Feb4.215231.16157@alias.uucp>
Organization: Taumetric Corporation, San Diego
Lines: 26

lfung@alias.UUCP (Lisa A. Fung) writes:

>class myClass {
>  public:
>    myClass();  // constructor
>    ~myClass(); // destructor
>  private:
>    Tthing   arrayOfThings[3];  // Tthing's constructor takes an arg...
>};

To initialize an array of objects whose constructor requires arguments,
you must provide complete initialization (E&S 12.6.1).  If a class has
a default constructor (one requiring no arguments), you do not need
to provide initializers.  For example:

struct T1 { T1(int); };		// no default constructor
struct T2 { T2(); T2(int); };	// has a default constructor

T1 a[3];			// illegal, no default constructor to call
T1 b[3] = { T1(1), T1(2), T1(3) };	// ok

T2 c[3];			// ok, uses default constructor
T2 d[3] = { T2(1), T2(2), T2(3) };	// ok
-- 

Steve Clamage, TauMetric Corp, steve@taumet.com