키워드 global

(Global variable에서 넘어옴)
global variable

1 PHP[ | ]

function change_a() {
	$a = 5;
}
$a = 1;
change_a();
echo $a;
# 1
function change_a() {
	global $a;
	$a = 5;
}
$a = 1;
change_a();
echo $a;
# 5

2 Python[ | ]

def change_a():
    a = 5

a = 1
change_a()
print( a )
# 1
def change_a():
    global a
    a = 5

a = 1
change_a()
print( a )
# 5

3 Perl[ | ]

sub change_a {
	my $a = 5;
}
$a = 1;
change_a();
print $a;
#1
sub change_a {
	$a = 5;
}
$a = 1;
change_a();
print $a;
# 5

4 Ruby[ | ]

class MyClass
  $str = "Hello"
end
puts $str
# Hello

5 같이 보기[ | ]

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