Categories
Development

Nested promise resolve of Firebase API doesn’t trigger

In the logic below I chain user data deletion. First the logic deletes user’s account, and later on success it delete collections dedicated to that user. For some reason I can see in firebase console that the collection get’s deleted but then callbacks never happen. deleteUserData() { FirebaseDb.collection(`users`).doc(this.userID).delete() .then(() => { // but this part […]

Categories
Development Google

Google Maps direction service onclick draws extra markers

I have to create google maps direction service between 2 points / markers on map click event I have prepared fiddle to illustrate how when you click on the map for a second time, a third marker is being printed on the map. Whatever I tried I could not succeed to remove the third marker. […]

Categories
Development

Target Sum does not output the right value

I’m trying to solve the target sum question (https://leetcode.com/problems/target-sum/description/) You are given a list of non-negative integers, a1, a2, …, an, and a target, S. Now you have 2 symbols + and -. For each integer, you should choose one from + and – as its new symbol. Find out how many ways to assign […]

Categories
Angular Development

Is there a way to search(filter) the FormArray in angular reactive forms?

I’m looking for a use-case in angular reactive forms to filter the dynamic form control input field in FormArray based on key.I have attached a screenshot of my implementation.In the search box i need to search the below properties based on the keys.

Categories
Development

pmap purrr error: Argument 1 must have names

I plan to sum a data.table row-wise and add a constant to it. What is wrong with this code. I am specifically looking for pmap_dfr solution: library(data.table) library(tidyverse) temp.dt <- data.table(a = 1:3, b = 1:3, c = 1:3) d <- 10 temp.dt %>% pmap_dfr(., sum, d) # add columns a b and c and […]

Categories
Development

Is there a benefit to using Value types in Dictionary for the type of the value field?

struct ValueTypeObject { private int x; } class RefTypeObject { private int x; } void main() { var a = new Dictionary<int, ValueTypeObject>(); var b = new Dictionary<int, RefTypeObject>(); } Is there any benefit in using a over b? For example, will ValueTypeObject in “a” get boxed/unboxed automatically or is there no boxing?

Categories
Database Development

Updating specific item in realtime database using recycler view

Actually I want to update a specific item in recycler view using firebase realtime database. I have created a schema and included it in my java file. But I am not able to update any item present in my firebase realtime database which has been saved using add item button. firstly, I tried to get […]

Categories
Development

Implementing onLongClick with interface on FirestoreRecyclerAdapter

I have a custom FirestoreRecyclerAdapter and I need to get the item’s Firestore ID through an interface to the “parent” class. I want to select multiple items in Recyclerview using onLongClickListener and change states (selected/unselected). I’ve tried implementing the OnLongClickListener and interface the same way I already implemented the OnClickListener with the help of this […]

Categories
Development

How to include path from ignored node_modules in flow config

I have flow config for ignoring all folders inside ‘node_modules’ But I want to Include one folder, how can I do this using flow config? Seems that my config doesn’t work and folder date-fns is still ignored. [ignore] <PROJECT_ROOT>/node_modules/.* [include] <PROJECT_ROOT>/node_modules/date-fns/

Categories
Development

How to replace my factory in my unit test without constructor dependency injection?

Usnig xUnit and Moq. EDIT1: This approach is going to be used in a library and I want to have parameterless constructor. I do not want my application project to know about dependencies of my library EDIT2: I just read, that this is form of property DI. I think to stick to it, if noone […]