dereference

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overloading dereference operator

I am new to C++ and i have a question on overloading dereference operator. I am building a in memory object store which is to be used by the applications. The data store is mapped in to the applicatio[详细]

2023-01-15 03:13 分类：问答
Why printf( "%s" , ptr ) is able to dereference a void*?

When we talk about dereference, is it necessary that * should be used in it? If we access the referent of the pointer in some other way, can it be considered as dereferencing a pointer or not,like:[详细]

2023-01-09 18:18 分类：问答
mysqli statement: fetch() an array of results

I use mysqli extension and bind the result to an object: class Item { public $id, $name; } $Item = new Item;[详细]

2023-01-09 13:14 分类：问答
C++ noob question: pointers and overloaded []

I\'ve been staring at this for a while and not getting very far.FruitBasketFactory, FruitBasket, and Fruit are three classes from an API I\'m using.My goal is to make a fruit basket and then retrieve[详细]

2023-01-08 08:03 分类：问答
Pointer to an Element of a Vector

If I have a pointer that is pointing to an element in a vector, say element 2, and then that element gets swapped with element 4 of the same vector.Is the pointer now pointing to element 2, element 4,[详细]

2023-01-06 04:56 分类：问答
C++ Tracking primitive type value change

i have a complex program with weird bug that some int value is down to zero unexpectedly. so i want tracking this built-in type value, then i could debug easily.[详细]

2023-01-04 06:59 分类：问答
dereferencing in a vector of pointers to objects

I\'m trying to access the object (called a Vector) pointed to by a pointer held in a vector container, but I can\'t seem to get to it.[详细]

2023-01-04 02:13 分类：问答
C pointer initialization and dereferencing, what's wrong here? [duplicate]

This question already has answers here: Why can't I directly assign an int to an int pointer like this: int *p = 6;开发者_如何学编程?[详细]

2023-01-03 06:22 分类：问答
dereferencing hash from params

This code works: my $href = shift @_;# get reference to hash my %h = %{$href};# dereference hash This one does not:[详细]

2023-01-02 17:26 分类：问答
dereferencing hash without creating a local copy

I the code bellow line 9 creates a local copy of a hash. Any changes to the %d will not provide changes to global %h variable (line: 5). I have to use reference (line: 8) to provide changes to %h.[详细]

2023-01-02 11:07 分类：问答