How to view the source code has been completed oracle procedure or function

For example, your procedure called pro1
Method 1: pl / sql developer, then enter --pro1, in the process name right, select view
Method two: select text from user_source where name = 'PRO1'

 

SQL> desc user_source;
 whether the name is null type?
 ------------- -------------- ------------ -

 NAME VARCHAR2 (30)
 the TYPE VARCHAR2 (12 is)
 the LINE NUMBER
 the TEXT VARCHAR2 (4000)