:
Programming paradigm
10
? , .
. , , , , -, . !
?
, . , , .
, , , . . .
, , , . , , .
, . , , , - , ( ).
, , .
?
. . , , .
. , , , ( Haskel ).
. , , - ( JavaScript Python).
, - .
, , , , , .
, . , . .
, , . , ( ), .
, , .
, . :
1- Pour flour in a bowl 2- Pour a couple eggs in the same bowl 3- Pour some milk in the same bowl 4- Mix the ingredients 5- Pour the mix in a mold 6- Cook for 35 minutes 7- Let chill
, , , 5. :
const nums = [1,4,3,6,7,8,9,2]
const result = []
for (let i = 0; i < nums.length; i++) {
if (nums[i] > 5) result.push(nums[i])
}
console.log(result) // Output: [ 6, 7, 8, 9 ]
, , , 5 , 5, .
, .
( ).
, .
. :
function pourIngredients() {
- Pour flour in a bowl
- Pour a couple eggs in the same bowl
- Pour some milk in the same bowl
}
function mixAndTransferToMold() {
- Mix the ingredients
- Pour the mix in a mold
}
function cookAndLetChill() {
- Cook for 35 minutes
- Let chill
}
pourIngredients()
mixAndTransferToMold()
cookAndLetChill()
, , , .
. .
.
. , , .
. , , , . . , ( ).
, . , . , .
. , .
const nums = [1,4,3,6,7,8,9,2]
const result = [] // External variable
for (let i = 0; i < nums.length; i++) {
if (nums[i] > 5) result.push(nums[i])
}
console.log(result) // Output: [ 6, 7, 8, 9 ]
, , :
const nums = [1,4,3,6,7,8,9,2]
function filterNums() {
const result = [] // Internal variable
for (let i = 0; i < nums.length; i++) {
if (nums[i] > 5) result.push(nums[i])
}
return result
}
console.log(filterNums()) // Output: [ 6, 7, 8, 9 ]
, , . , , . , .
. , , , , .
, . . :
const nums = [1,4,3,6,7,8,9,2] console.log(nums.filter(num => num > 5)) // Output: [ 6, 7, 8, 9 ]
, , filter, . , (filter) , (num > 5).
? , . filter, map, reduce sort JavaScript.
/ JS, React. , , :
<button onClick={() => console.log('You clicked me!')}>Click me</button>
(button) , console.log .
JSX (, React) HTML JS. . , . React HTML JS, , .
JSX , , .
, .
, - , for, , , . .
-
- ().
, . () (), .
. - , . , , .
. , ( ) ( ). . , :
// Create the two classes corresponding to each entity
class Cook {
constructor constructor (name) {
this.name = name
}
mixAndBake() {
- Mix the ingredients
- Pour the mix in a mold
- Cook for 35 minutes
}
}
class AssistantCook {
constructor (name) {
this.name = name
}
pourIngredients() {
- Pour flour in a bowl
- Pour a couple eggs in the same bowl
- Pour some milk in the same bowl
}
chillTheCake() {
- Let chill
}
}
// Instantiate an object from each class
const Frank = new Cook('Frank')
const Anthony = new AssistantCook('Anthony')
// Call the corresponding methods from each instance
Anthony.pourIngredients()
Frank.mixAndBake()
Anthony.chillTheCake()
, .
, .
, , , -. , , , , .
