call vim function with current word

Question

suppose I have a line like this: hello foo bar

and my cursor is on foo. I want to map a key that will call a function with foo without me having to first select it visually. How would I do this in vim?

Answer 1

you are looking for function expand(expression)

here your expression would be '<cword>'

If you love to put it as function argument, you could :yourFunction(expand('<cword>'))

:h expand( for more details.