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Frequently Asked Questions

How can I discover how many arguments a function was actually called with?

Infrequently Asked Questions in comp.lang.c
_args is an external integer constant. It evaluates to three times the number of arguments the current function was called with. You can then look at _argdata[args] to get the address of the last arg, _argdata[args - 1] to get the size of the last arg, and _argdata[args - 2] to get the type of the last arg (as an int). N.B. You *MUST* not refer to _args or _argdata between the ()'s of a function call; their value will be indeterminate. Use temporary storage.

Can I call the constructor of the base class?

Frequently asked question about the Scriptol interpreter and...
I inherit the class Car of the class Vehicle, for example. Can I call the constructor of Vehicle, from the constructor of Car? I do that in Java. Java has the "super" keyword to call the constructor of a class from the constructor of an inherited class. There is no equivalent in Scriptol. If you call the constructor of the base class, this create a new instance of the base class. But you can assign the attributes of the base class from the constructor of the inherited class. See similar questions...

What is a constructor?

snitfaq - Snit's Not Incr Tcl, OO system
In object-oriented programming, an object's constructor is responsible for initializing the object completely at creation time. The constructor receives the list of options passed to the snit::type command's create method and can then do whatever it likes. That might include computing instance variable values, reading data from files, creating other objects, updating type and instance variables, and so forth. See similar questions...

How do I call the constructor?

FAQ
The Polynomial(int d, double *coefs) constructor is invoked when an object of type Polynomial is defined using the appropriate arguments. For example, double co[] = { 1.2, 3.4, 5.6 }; Polynomial p(2, co); constructs p to represent 5.6x2 + 3.4 x + 1.2. See similar questions...

Which constructor gets called when I create an array of Fred objects?

Constructors, C++ FAQ Lite
If your class doesn't have a default constructor, you'll get a compile-time error when you attempt to create an array using the above simple syntax: However, even if your class already has a default constructor, you should try to use std::vector<Fred> rather than an array (arrays are evil). See similar questions...

Do I need to call super() in the constructor of a class that extends an abstract class?

Java FAQ
No. Since abstract classes don't have constructors it would be a syntax error to call super(). Just implement the constructor of the subclass as if it does not have a parent class. See similar questions...

How can I find out when a particular function was introduced?

ColdFusion FAQ
How can I loop through all the form fields and values? <cfloop list="#form.FieldNames#" index="FormField"> <cfoutput>Current form field: #FormField#</cfoutput> </cfloop> See similar questions...

Can the Studio create something for a particular function?

The Non-Useless Furniture Studio
We do not custom make pieces. We prefer to be guided by our own inspiration. But if someone comes to us with an idea for a new function, we may consider it when designing a new model for the collection. See similar questions...

how can you invoke parameterized constructor to create object from class reference?

Java FAQ - Page 9
Latest Answer: Here is the snap shot of the working solution to the said question..try{System.out.println("cl... Latest Answer: Synchronized is used to synchronize an OBJECT. So, answer to this is false since we can use it for a... See similar questions...

How to handle C++ class constructor overloading and polymorphism in Ch?

Frequently Asked Questions for Ch
The example above demonstrates how to overload functions in Ch. For handling C++ constructors with polymorphism, please check Ch User's Guide sections about Variable Number Arguments in Functions and Polymorphism for member functions and contructors. See similar questions...

Q : At which frequency my WhatToDoNextEvent function is called ?

Project Hoshimi, tutorial for beginners (Part 3 : FAQ) , Cod...
A : You can get during the game Utils.NumberOfTurnBetweenEvent, this number is the number of turns elapsed between two WhatToDoNextEvent calls. Usually there are 4 turns between 2 WhatToDoNextEvent calls (but this can change), so it called at turn 4, 8, 12, 16???. See similar questions...

You have one base class virtual function how will call that function from derived class?

Mail Test
Ans: 124. class a125. {126. public virtual int m()127. {128. return 1;129. }130. }131. class b:a132. {133. public int j()134. {135. return m();136. } } See similar questions...

How can a member function in my derived class call the same function from its base class?

Inheritance -- virtual functions Updated! , C++ FAQ Lite
I have a heterogeneous list of objects, and my code needs to do class-specific things to the objects. Seems like this ought to use dynamic binding but can't figure it out. What should I do? Updated! See similar questions...

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