Code completion in Vi editor [duplicate]

Question

Is there an autocomplete feature for Vi? ctrlp looks for keywords already used in the document. But suppose I want a.funcname to automatically show members of object a. Is it possible with Vi?

Answer 1

YouCompleteMe. It’s a plugin that offers extremely fast, fully syntax-aware auto-completion. It furthermore shows code errors on the fly (by putting a marker inside the margin next to the offending line).

So far, C++, C# and Python are natively supported. However, the plugin has an easily accessible API to add support for more languages.

There are other plugins but with the exception of Jedi (for Python only) nothing comes even close to working properly.