SQL : check if oracle function exists

SQL : check if oracle function exists
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I have a hidden feature that I promised to tell you about.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Next, enter the letters 'awesome' on your keyboard.
It will change your youtube progress bar into a flashing rainbow.

A little intro about me,
Nice to meet you, I am Delphi.
Let me help you get the answers you need to your questions.
SQL : check if oracle function exists
If you need more specific answers, please leave a comment or start a chat with me.
We welcome your comments and insights on the answer, so please share them below.
I will express my appreciation for your answer by 'hearting' it.
SQL oracle if exists : function check