I am trying to find an item index by searching a list. Does anybody know how to do that? I see there is list.StartIndex and list.EndIndex but I want something like python’s list.index(“text”). 23 s 23 As swift is in some regards more functional than object-oriented (and Arrays are structs, not objects), use the function … Read more
In Swift, how can I check if an element exists in an array? Xcode does not have any suggestions for contain, include, or has, and a quick search through the book turned up nothing. Any idea how to check for this? I know that there is a method find that returns the index number, but … Read more
lets say we have a custom class named imageFile and this class contains two properties. class imageFile { var fileName = String() var fileID = Int() } lots of them stored in Array var images : Array = [] var aImage = imageFile() aImage.fileName = “image1.png” aImage.fileID = 101 images.append(aImage) aImage = imageFile() aImage.fileName = … Read more
I have an array that I’ve created in TypeScript and it has a property that I use as a key. If I have that key, how can I remove an item from it? 18 s 18 Same way as you would in JavaScript. delete myArray[key]; Note that this sets the element to undefined. Better to … Read more
In Bash, what is the simplest way to test if an array contains a certain value? 4Best Answer 41
In a Bash script, I would like to split a line into pieces and store them in an array. For example, given the line: Paris, France, Europe I would like to have the resulting array to look like so: array[0] = Paris array[1] = France array[2] = Europe A simple implementation is preferable; speed does … Read more
Is there a function that I can use to iterate over an array and have both index and element, like Python’s enumerate? for index, element in enumerate(list): … 17 s 17 Yes. As of Swift 3.0, if you need the index for each element along with its value, you can use the enumerated() method to … Read more
I had an interesting job interview experience a while back. The question started really easy: Q1: We have a bag containing numbers 1, 2, 3, …, 100. Each number appears exactly once, so there are 100 numbers. Now one number is randomly picked out of the bag. Find the missing number. I’ve heard this interview … Read more
I want to write a script that loops through 15 strings (array possibly?) Is that possible? Something like: for databaseName in listOfNames then # Do something end 2 22 You can use it like this: ## declare an array variable declare -a arr=(“element1” “element2” “element3”) ## now loop through the above array for i in … Read more
