Web1 day ago · I have a Match[] from string matching, each Match has a Groups property which is a GroupCollection.I want to map the Match[] to a GroupCollection[], and I'm trying to do this with a pipeline's output using ForEach-Object.. The issue is that whenever I access and return Match[x].Groups in the script block, the collection gets enumerated and outputted … WebJun 11, 2024 · Table of Contents. Scenario 1 – The collection is modified in the foreach loop. Solution 1 – If you’re removing items, use RemoveAll () Solution 2 – If you’re adding items, put them in a temp and use AddRange () Solution 3 – Use a regular for loop and loop in reverse. Scenario 2 – One thread is modifying the collection while ...
powershell - Collection was modified; enumeration operation …
WebFeb 19, 2024 · The message says "Collection was modified" and that the enumeration won't work. Note We are changing the elements in the collection while looping over it … WebAug 29, 2015 · Is creating a new List to modify a collection in a for each loop a design flaw? The short answer: no Simply spoken, you produce undefined behaviour, when you iterate through a collection and modify it at the same time. Think of deleting the next element in a sequence. What would happen, if MoveNext() is called?. An enumerator … tiffin university athletics staff
Collection that can be modified in a foreach
WebFeb 13, 2015 · Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site WebApr 16, 2024 · refer to items by their index in the collection (i.e. not foreach) loop backwards through the collection; Something like this (this is going to be a little more C#-ish than Powershell, the exact Powershell syntax is not coming to me at the moment, but you will get the idea): WebAug 26, 2024 · 1,742. When the collection is modified (fe by Remove) the enumerator is invalidated. Easiest would be to use a plain for loop instead foreach. Or you could add … tiffin university calendar 2022