Python has closures:def outer():
print "Enter number:",
num = raw_input()
def inner():
print num
return inner
f = outer()
f()Note that the variable num is available from within inner when outer has already completed.
Did you know that JavaScript has them too?function testSetTimeout() {
var privateVar = 'A string';
function bar() { alert(privateVar); }
window.setTimeout(bar, 1000);
}
testSetTimeout();The function bar makes use of privateVar which a variable in testSetTimeout's local scope even though bar is invoked later by setTimeout, i.e. after testSetTimeout has completed.
print "Enter number:",
num = raw_input()
def inner():
print num
return inner
f = outer()
f()Note that the variable num is available from within inner when outer has already completed.
Did you know that JavaScript has them too?function testSetTimeout() {
var privateVar = 'A string';
function bar() { alert(privateVar); }
window.setTimeout(bar, 1000);
}
testSetTimeout();The function bar makes use of privateVar which a variable in testSetTimeout's local scope even though bar is invoked later by setTimeout, i.e. after testSetTimeout has completed.