liu skywalker wrote in post #1011661:
> в 2011ǯ07·î19Æü 21:42, Annie smith ¼ÌÆ»:
>> Hi All,
>>
>> Do you know how to change date format from Y/m/d to Y-m-d in ruby?
>>
>> Thanks!
>>
> def convert!(time)
>    time=times.split("/").join("-")
> end
> convert!("2011/11/11)

Aside 1: it's unconventional to put an exclamation mark at the end of a method name, if the method does absolutely nothing dangerous, nor does it modify the receiver.

Aside 2: no need to assign the result. Also, 'times' is not known.

Here's a corrected version:

def convert(time)
  time.split("/").join("-")
end

Here's an alternative one:

def convert(time)
  time.gsub(%r{/}, '-')
end