[Solved] How can you combine multiple selectors to create a selector that returns the full name from separate first and last name selectors?const selectFirstName = (state) => state.... | Angular

Angular - State Management

How can you combine multiple selectors to create a selector that returns the full name from separate first and last name selectors?

const selectFirstName = (state) => state.firstName;
const selectLastName = (state) => state.lastName;

Aconst selectFullName = createSelector(selectFirstName, selectLastName, (first, last) => first + last);

Bconst selectFullName = createSelector(selectFirstName, selectLastName, (first, last) => `${first} ${last}`);

Cconst selectFullName = createSelector(state => state.firstName + state.lastName);

Dconst selectFullName = createSelector(selectFirstName, selectLastName, (first, last) => first.concat(last));

Step-by-Step Solution

Solution:

Step 1: Use createSelector with multiple input selectors
Pass both selectFirstName and selectLastName as inputs.
Step 2: Combine inputs with template literal
Use `${first} ${last}` to join names with space.
Final Answer:
const selectFullName = createSelector(selectFirstName, selectLastName, (first, last) => `${first} ${last}`); -> Option B
Quick Check:
Multiple selectors combined with template literal [OK]

Quick Trick: Combine selectors with createSelector and template literals [OK]

Common Mistakes:

Master "State Management" in Angular

9 interactive learning modes - each teaches the same concept differently

More Angular Quizzes

How can you combine multiple selectors to create a selector that returns the full name from separate first and last name selectors?