How to use vim to speed up the Python/Javascript/Golang/Flutter/Kotlin development process

Select code block

shift + v
shift + }
o
shift + {
d or p or y

shift + } and shift + { can get pressed multiple times

Comment code block

shift + v
shift + }
o
shift + {
shift + i
// or #
esc

shift + } and shift + { can get pressed multiple times

Select a whole object or function

^^ - start of the line
v - start visual mode
f - jump to the next search character
{ - this is the search character
% - jump to the closing brackets

Select a whole object or function (not perfect

Inside of a function:

vai

Replace text in selected text 

shift + v
shift + }
o
shift + {
:s/old_text/new_text

or

ctrl + v
shift + }
o
shift + {
k
^^
w or b
c

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