changing a vector while iterating results

Summary

It is possible to remove elements from a vector inside a loop in C++ by using iterators to iterate the vector and calling the vector::erase function if the current element matches the predicate. 1 Special care needs to be taken while erasing an element as calling the erase() function on the vector element invalidates the iterator. 1

According to

1 www.techiedelight.com

Summaries from the best pages on the web

for trouble to modify a vector while iterating through it. That is, I want to do something like the following pseudocode in C++: for each element of the vector for…

Good practice? modifying vector while iterating through it - C / C++

bytes.com

Summary The idea is to use iterators to iterate the vector and call the vector::erase function if the current element matches the predicate. Since calling the erase() function on the vector element invalidates the iterator, special care needs to be taken while erasing an element.

Remove elements from a vector inside a loop in C++

techiedelight.com

Display contents of vector through an iterator : 2. Use const_ iterator to loop through the vector : 3. interator operator for vector : 4. Loop through all elements in a vector in reverse…

Change contents of vector through an iterator : vector iterator ...

java2s.com

Accessing the vector 's content by index is much more efficient when following the row-major order principle. Of course, each access to the vector also puts its management content into the…

C++ Tutorial => Iterating Over std::vector

riptutorial.com

While iterating over a vector in a loop, if any of its element gets deleted then all the existing iterator becomes invalidated. It means, if in a loop we call…

C++ : Remove elements from vector in loop (while iterating)

devptr.com

C++ Iterate over Elements of Vector using While Loop To iterate over the elements of a vector using While Loop, start at zero index and increment the index by one…

C++ Vector - Iterate using While Loop - TutorialKart

tutorialkart.com

When we iterate over our container using iterators then it may happen that the iterator gets invalidated. This may be due to change in the shape and size of the…

Iterator Invalidation in C++ - GeeksforGeeks

geeksforgeeks.org

vector ::begin () –> Returns an iterator that points to the start of vector , vector ::end () –> Returns an iterator that points to the end of vector . We can use a …

C++: Iterate or Loop over a Vector – thisPointer

thispointer.com

If you want to change the vector into a list without changing the code, this would not be possible without an iterator . But since you are using an iterator here,…

Iterators in C++: An Ultimate Guide to Iterators - Simplilearn.com

simplilearn.com

You can push indices or iterator values in another vector , then just reverse iterate that and erase or otherwise remove from the primary vector as you go. You could store…

Proper way to erase an element from a vector when iterating

gamedev.net