any simple way to do this?

[robertchen117]

the day of the date is a number, April 4.

I want to replace the number with 04, if it is already 04, then do
nothing. If it is 4 replace with 04.

Please give me a simple way to do this.

 

[Sisyphus]

the day of the date is a number, April 4.

I want to replace the number with 04, if it is already 04, then do
nothing. If it is 4 replace with 04.

Please give me a simple way to do this.

Does this help ?

---------------
use strict;
use warnings;

for(04, 4, 14, 214) {printf "%02d ", $_}

print "\n";

#or use sprintf() if you want to assign:

for(04, 4, 24, 4132) {
my $formatted = sprintf( "%02d", $_);
print $formatted, " ";
}

print "\n";

 

[Paul Lalli]

Does this help ?

---------------
use strict;
use warnings;

for(04, 4, 14, 214) {printf "%02d ", $_}

print "\n";

#or use sprintf() if you want to assign:

for(04, 4, 24, 4132) {

^^

Be careful. That worked only because Decimal 4 happens to be
equivalent to Octal 4. Try it with 09 or 010 and see what happens.

Paul Lalli

 

[Sisyphus]

..
..

^^

Be careful. That worked only because Decimal 4 happens to be
equivalent to Octal 4. Try it with 09 or 010 and see what happens.

Damned octal

s/04/'09'/

Cheers,
Rob