Questions tagged [const-pointer]
36 questions
0
votes
3 answers
invalid initialization of non-const reference of type std::string& - how to remove
I am getting an error:
error: invalid initialization of non-const reference of type 'std::string& {aka std::basic_string&}' from an rvalue of type 'std::basic_string'
The code is:
const std::string& hitVarNameConst = (isKO ? "isKO" : "isKI");
for…
Mayank Raj
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0
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1 answer
Why can't I change address of a pointer of type `const int *` when passed as function argument?
As far as I know, const int * implies that I can change the pointer but not the data, int * const says that I can't change the pointer address but I can change the data, and const int * const states that I can't change any of them.
However, I can't…
hkBattousai
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0
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2 answers
new-expression and delete-expression on const reference and const pointer
C++
Much literature says const references cannot be used to modify their referents and const pointers cannot be used to modify their pointees.
Then, why can they be deleted?
const int& cirDynamic = *( new int(5) );
// ^ 'const int& cirDynamic = *(…
CodeBricks
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0
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3 answers
How do you reproduce the behavior of const-pointers in Java?
I have a singleton class containing a bunch of control data that needs to be kept synchronized with the rest of my application. As a result, there are many times which I want another class to be able to read the information but not modify it. …
user1990929
- 11
-1
votes
1 answer
C++ const pointers weird behaviour
Class C {
struct Something {
string s;
// Junk.
}
// map from some string to something.
map map;
// Some more code:
const Something *Lookup(string k) const {
const something *l = SomeLookUpFunction();
cout <<…
dhruv
- 19
- 5
-1
votes
1 answer
Type conversions of a void pointer for pointer arithmetics
For using pointer arithmetics the type of a void pointer is converted multiple times.
The vector containing the data comes from an external source and returns a void pointer to access its data. Furthermore, the stride is also given by the external…
Roi Danton
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