Array clone()

array clone

array deep copy

deep copy

1 JavaScript

var clone = myArray.slice(0);

Array.prototype.clone = function() { return this.slice(0); };

• http://davidwalsh.name/javascript-clone-array

2 Python

import copy
a = ['Banana', 'Orange', 'Apple', 'Mango']
b = copy.deepcopy(a)
a[1] = 'ORANGE'

print( a )
print( b )
# ['Banana', 'ORANGE', 'Apple', 'Mango']
# ['Banana', 'Orange', 'Apple', 'Mango']
print( a == b )
print( id(a) == id(b) )
# False
# False
print( id(a[0]) == id(b[0]) )
print( id(a[0]) == id(b[1]) )
# True
# False

a = ['Banana', 'Orange', 'Apple', 'Mango']
b = a[:]
a[1] = 'ORANGE'

print( a )
print( b )
# ['Banana', 'ORANGE', 'Apple', 'Mango']
# ['Banana', 'Orange', 'Apple', 'Mango']
print( a == b )
print( id(a) == id(b) )
# False
# False
print( id(a[0]) == id(b[0]) )
print( id(a[0]) == id(b[1]) )
# True
# False

3 같이 보기

• array_slice
• shallow copy