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CSet:new
The new method creates an instance of the CSet class. This method returns to the caller a reference to the object it creates. The calling code must assign this reference to a name (see below). If the object cannot be created, nil is returned.
Note: This method's name uses all lower case to present it as the analog of the C++ new operator. Generally, the names of class methods begin with an uppercase letter but new and delete are different.
S = CSet:new()
Default
constructor. The new CSet S has
no elements.
S = CSet:new( CSet2 )
This is a copy
constructor. The new CSet S is
initialized to the members of the CSet2
argument.
The following example shows the use of a default constructor and destructor pair:
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S = CSet:new() |
-- create a new instance of S of the CSet class. |
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... |
-- other uses of the class go here, between new and delete. |
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S:delete() |
-- deletes the object and its associated memory. |
The next example shows the use of both types of constructors:
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S = CSet:new() |
-- initialization constructor |
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S:Append( "Add" ) |
-- add a member |
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S:Append( "Mul" ) |
-- add a member |
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S:Append( "Div" ) |
-- add a member |
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Printf("Count= %d", S:Count()) |
-- result: Count = 3 |
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S2 = CSet:new(S) |
-- copy constructor |
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Printf("Count= %d", S2:Count()) |
-- result: Count = 3 |