idioms

[florcitax]

I want to know if someone knows what´s the meaning of these idioms:
1. As a rule of thumb, always write down the code
2. to pour your heart out
3. to be as slippery as an eel
4. put someone´s back up

please!! give me the meaning because this is an assignment..
thank U ...

[Anglika]

Welcome to the forums.

Have you tried a search in this? English Idioms and Idiomatic Expressions - UsingEnglish.com

Please do that first. If you cannot find anything there, ask again.