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Group 2@2x
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Vincent Cotro
Vincent Cotro
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525
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144 questions
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8
Medium
61 votes
2721 runs
4 comments
Understanding the differences between `map()` and `forEach()` methods in JavaScript
Web developer
at Jan 18, 2024
Easy
28 votes
2502 runs
3 comments
Write a JavaScript function that fetches data from an API and logs it to the console.
Web developer
promises
async
at Mar 28, 2023
Easy
28 votes
2150 runs
0 comment
Write a SQL query to retrieve the list of employees with a salary greater than 5100.
Back-end developer
sql
select
where
at Mar 30, 2023
Easy
28 votes
1239 runs
1 comment
Write a Python function that returns the factorial of a number.
Back-end developer
recursion
at Mar 28, 2023
Easy
21 votes
1377 runs
1 comment
Explain the difference between the `include` and `require` functions in PHP.
Back-end developer
functions
errors
at Mar 24, 2023
Easy
14 votes
2071 runs
1 comment
Update a column in an SQL table
Back-end developer
sql
update
at Nov 7, 2023
Easy
13 votes
2124 runs
0 comment
Select only distinct values in a column using SQL
Back-end developer
sql
distinct
at Mar 27, 2023
Easy
12 votes
2114 runs
0 comment
Which SQL keyword is used to sort the result of a SELECT statement?
Back-end developer
sql
order by
at Mar 27, 2023
Easy
11 votes
2133 runs
0 comment
Write a SQL query to insert data into a table
Back-end developer
sql
insert
at Mar 27, 2023
Medium
10 votes
2074 runs
4 comments
Write the SQL query to delete a column from a table
Back-end developer
sql
table
column
at Mar 27, 2023
Easy
10 votes
2024 runs
0 comment
Write a SQL query to retrieve the products with a price less than 1000 and sort the results in descending order of price.
Back-end developer
sql
order by
descending
at Mar 28, 2023
Easy
9 votes
890 runs
1 comment
Write a SQL query to retrieve the titles of books written by 'John Smith'.
Back-end developer
join
inner join
sql
at Sep 6, 2023
Easy
8 votes
884 runs
0 comment
Which of the following utility types makes all properties of a given type optional?
Web developer
typescript
types
at Mar 29, 2023
Easy
7 votes
2104 runs
0 comment
How to delete an SQL table?
Back-end developer
sql
tables
at Mar 27, 2023
Medium
7 votes
466 runs
0 comment
What is the best practice to apply in your code to improve the performance of your application?
Back-end developer
performance
gzip
at Nov 15, 2023
Medium
6 votes
2991 runs
2 comments
Print the number of countries in the array travel.
Web developer
array
for loop
at Sep 5, 2022
Easy
6 votes
1969 runs
0 comment
Write a SQL query to get the total order amount for each customer.
Back-end developer
sql
sum
group by
at Mar 28, 2023
Easy
6 votes
1348 runs
0 comment
Write a React component that updates the document title with each click and resets to 'React App' when the component unmounts.
Web developer
react
hooks
useState
at Apr 5, 2023
Medium
6 votes
1128 runs
2 comments
Use the `useContext` hook to render a button with a dark theme.
Web developer
react
context
hooks
at Nov 7, 2023
Easy
6 votes
879 runs
0 comment
Define a custom type that represents a coordinate with an x and y property of type number in Typescript
Web developer
typescript
type
at Mar 31, 2023
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