The associative containers std::map, std::multimap, std::set, and std::multiset have the following three overloaded forms of the member function erase(): class map // simplified for brevity{public://..other members void erase(iterator position); //
Question: After I have already declared an object, how can I call its constructor again to re-initialize its member variables? Answer: You can’t do that. C++ guarantees that for each
Question: What is the purpose of static methods in Java? Answer: Static methods can be invoked without an instance of an object. They provide the ability to execute methods in
Question: Every class in Java is supposed to extend the Object class by default. In case a user class extends some other class (e.g., if myclassextends yourclass), then is it
Question: Which is faster, LOCATE (without parameters) or GO TOP? How fast is the one from the other? Why is one faster than the other? Answer: They are usually equal
Question: In Informix SE, I can use ISQL to generate a default form from a table and then query, update, or delete data within the form? How do I do
Question: How can ‘Ontape’ functions be used to back up Informix/Lawson DB to disk? Is dbspace required or can a large area in a directory (e.g., /gsc/bigspace) be used? Answer:
Question: I cannot initialize the program after I have installed it. When I run “oninit”, it seems to work, but then when I run “onstat” it tells me that the
Question: I am using Informix 7.24 and my raw partitions are getting quite large. Is there a way to tell the size of a database? I could then decide which