I have 2 arrays: var a = [1, 2, 3] var b = [a, b, c] What I want to get as a result is: [[1, a], [2, b], [3, c]] It seems simple but I just can’t figure out. I want the result to be one array with each of the elements from the … Read more
I am wondering how to convert an NSArray [@”Apple”, @”Pear “, 323, @”Orange”] to a string in Objective-C. 9 Answers 9
I’m trying to make a program that consists of an array of 10 integers which all has a random value, so far so good. However, now I need to sort them in order from lowest to highest value and then print it onto the screen, how would I go about doing so? (Sorry for having … Read more
From Effective Java by Joshua Bloch, Arrays differ from generic type in two important ways. First arrays are covariant. Generics are invariant. Covariant simply means if X is subtype of Y then X[] will also be sub type of Y[]. Arrays are covariant As string is subtype of Object So String[] is subtype of Object[] … Read more
This question already has answers here: How to return the response from an asynchronous call (43 answers) Closed 5 years ago. My script is returning [object Object] as a result of console.log(result). Can someone please explain how to have console.log return the id and name from result? $.ajaxSetup({ traditional: true }); var uri = “”; … Read more
This question already has answers here: How do I get the number of elements in a list in Python? (13 answers) Closed 4 years ago. How can I count the number of elements in an array, because contrary to logic array.count(string) does not count all the elements in the array, it just searches for the … Read more
I have the following string: “,’first string’,’more’,’even more'” I want to transform this into an Array but obviously this is not valid due to the first comma. How can I remove the first comma from my string and make it a valid Array? I’d like to end up with something like this: myArray = [‘first … Read more
I have this string array: string[] stringArray = { “text1”, “text2”, “text3”, “text4” }; string value = “text3”; I would like to determine if stringArray contains value. If so, I want to locate its position in the array. I don’t want to use loops. Can anyone suggest how I might do this? 13 Answers 13
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree. Every entry of the json has : id : a unique id, parentId : the id of the parent node (which is 0 if the node is a root of the … Read more
I am setting up a React app with a Rails backend. I am getting the error “Objects are not valid as a React child (found: object with keys {id, name, info, created_at, updated_at}). If you meant to render a collection of children, use an array instead.” This is what my data looks like: [ { … Read more