# filter function

l1=[10,20,30,40,50,60,70,80]

l2= [i for i in filter(lambda x:x>30,l1)]

print(l2)

​

​

# [40, 50, 60, 70, 80]

# filter takes a function and a collection. It returns a collection of every item for which the function returned True.

const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];

​

const filter = arr.filter((number) => number > 5);

console.log(filter); // [6, 7, 8, 9]

​

const products = [

    { name: 'Laptop', price: 32000, brand: 'Lenovo', color: 'Silver' },

    { name: 'Phone', price: 700, brand: 'Iphone', color: 'Golden' },

    { name: 'Watch', price: 3000, brand: 'Casio', color: 'Yellow' },

    { name: 'Aunglass', price: 300, brand: 'Ribon', color: 'Blue' },

    { name: 'Camera', price: 9000, brand: 'Lenovo', color: 'Gray' },

];

//Get products that price is greater than 3000 by using a filter

const getProduct = products.filter(product => product.price > 3000);

console.log(getProduct)

//Expected output:

/*[

    { name: 'Laptop', price: 32000, brand: 'Lenovo', color: 'Silver' },

    { name: 'Camera', price: 9000, brand: 'Lenovo', color: 'Gray' }

  ]

*/

  const forwardFn = (id) => {

    console.log(id);

    const filteredArray = state.filter((e, index) => {

      console.log(index);

      return index !== id;

    });

​

    setstate(filteredArray);

  }; aka

const grades = [10, 2, 21, 35, 50, -10, 0, 1];

​

// get all grades > 20

const result = grades.filter(grade => grade > 20); // [21, 35, 50];

​

// get all grades > 30

grades.filter(grade => grade > 30); // [35, 50]

const filteredArray = array.filter(element => element.id != id))

select *

from   toys

where  toy_name ='Sir Stripypants' OR colour ='blue'

       AND price = 6;

var jsonarr = [

    {

        id: 1,

        name: "joe"

    },

    {

        id: -19,

        name: "john"

    },

    {

        id: 20,

        name: "james"

    },

    {

        id: 25,

        name: "jack"

    },

    {

        id: -10,

        name: "joseph"

    },

    {

        id: "not a number",

        name: "jimmy"

    },

    {

        id: null,

        name: "jeff"

    },

]

var result = jsonarr.filter(user => user.id > 0);

console.log(result);

class FilterOperation {

​

    public static void main(String[] args) {

        Stream.of(34,678,89,4,52,31,325,6)

        .filter(e -> e%2 == 0)

        .forEach(e -> System.out.println(e));

    }

}

​

$grid.isotope({ filter: '*' })