iterator

问题 Is it specified that you can delete any element in an instance of Set while iterating using for..of and that you won't iterate more than once on an element you won't miss any other element that was in the set at the start of the iteration other than the ones you remove ? 回答1: Yes , it is perfectly fine to add elements and remove elements to a set while iterating it. This use case was considered and is supported in JavaScript 2015 (ES6). It will leave it in a consistent state. Note this also

问题 next_permutation is a C++ function which gives the lexicographically next permutation of a string. Details about its implementation can be obtained from this really awesome post. http://wordaligned.org/articles/next-permutation Is anyone aware of a similar implementation in Python? Is there a direct python equivalent for STL iterators? 回答1: itertools.permutations is close; the biggest difference is it treats all items as unique rather than comparing them. It also doesn't modify the sequence

问题 I am looking for an element in a C++ vector, and when I find it, I want to get found element's index in a numerical form(integer, float). My naive attempt is this : int x; int index; vector<int> myvector; vector<int>::iterator it; it = find(myvector.begin(), myvector.end(), x); index = (int) * it; This code is giving error. Can you tell me how I can convert iterator to int(if possible), or can you tell me how I can get found element's index in other way? Thanks. 回答1: You need to use standard

问题 I am looking for an element in a C++ vector, and when I find it, I want to get found element's index in a numerical form(integer, float). My naive attempt is this : int x; int index; vector<int> myvector; vector<int>::iterator it; it = find(myvector.begin(), myvector.end(), x); index = (int) * it; This code is giving error. Can you tell me how I can convert iterator to int(if possible), or can you tell me how I can get found element's index in other way? Thanks. 回答1: You need to use standard

问题 I am looking for an element in a C++ vector, and when I find it, I want to get found element's index in a numerical form(integer, float). My naive attempt is this : int x; int index; vector<int> myvector; vector<int>::iterator it; it = find(myvector.begin(), myvector.end(), x); index = (int) * it; This code is giving error. Can you tell me how I can convert iterator to int(if possible), or can you tell me how I can get found element's index in other way? Thanks. 回答1: You need to use standard

来源： https://stackoverflow.com/questions/48852454/how-can-i-iterate-over-a-2d-vector-in-functional-style

来源： https://stackoverflow.com/questions/55156459/is-there-a-way-to-merge-two-iterators-into-the-same-vec

来源： https://stackoverflow.com/questions/24997910/get-index-in-vector-from-reverse-iterator

来源： https://stackoverflow.com/questions/24997910/get-index-in-vector-from-reverse-iterator

来源： https://stackoverflow.com/questions/48977251/why-does-the-implementation-of-fromiterator-use-an-intoiterator-instead-of-a