function fromlist(l) {
return l.filter(e => Number.isInteger(e));
}
// or this
function fromlist(l) {
return l.filter(Number.isInteger);
}
Here is what the above code is Doing:
1. The filter() method creates a new array with all elements that pass the test implemented by the provided function.
2. The Number.isInteger() method determines whether the passed value is an integer.
{e.target.onerror = null; e.target.src=”image_path_here”}}/> Here is what the above code is Doing: 1. We’re using the onError event handler to catch any errors that occur when the image is loading. 2. We’re setting the onerror property to null. This is to prevent infinite looping. 3. We’re setting the src property to the path of the…
const express = require(‘express’) const app = express() app.get(‘/’, (req, res) => { console.log(req.query) }) app.listen(8080) Here is what the above code is Doing: 1. We’re importing the express module and creating an express app. 2. We’re creating a route that listens for GET requests to the root path (‘/’). 3. We’re logging the query…
respond_to do |format| format.json { render :json => @user, :except=> [:ip] } # or without format block: @user.to_json(:except => :ip) end Here is what the above code is Doing: 1. It’s creating a new user object with the params passed in. 2. It’s saving the user object to the database. 3. It’s returning the user…
que disen los niños Here is what the above code is Doing: 1. We’re creating a variable called “numbers” and setting it equal to a list of numbers. 2. We’re creating a variable called “total” and setting it equal to 0. 3. We’re creating a for loop that will loop through each number in the…
$(‘#form_id’).trigger(“reset”); Here is what the above code is Doing: 1. We are using the jQuery selector to select the form with id form_id and triggering a reset event on it. 2. The reset event restores the form to its original state.
The iterator is an object that returns values via its method next() Here is what the above code is Doing: 1. The first line creates an iterator object from the list [1, 2, 3]. 2. The for loop calls the next() method on the iterator object. 3. The next() method returns the next value from…