Why is it that when I a method on an struct pointer, like
func (s *Object) process(inputs []byte) {
for _, i := range inputs {
// Lots of code
}
}
it will slow down *a lot* if I move // Lots of code to its own function?
I.e. I reorganize the above program two use two methods,
func (s *Object) process(inputs []byte) {
for _, i := range inputs {
processInput(i)
}
}
func (s *Object) processInput(i byte) {
// Lots of code
}
This new code runs 30% slower now!
Why?
This matters because I'm in a situation in *pluck* where I need // Lots of
code in two places. You can reproduce this in *pluck* by running
go get -u github.com/schollz/pluck
cd $GOPATH/src/github.com/schollz/pluck/pluck
git checkout ef1004f && go test -bench=Stream -run=z
git checkout 76c4e96 && go test -bench=Stream -run=z
git diff 76c4e96 ef1004f # shows that I replace lots of code with one
function
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