Is enableProdMode(); and build --prod are equivalent?

Hi guys, I have one silly question. I’m wondering about ways to speed up my app. In most cases the popular one is to use --prod flag during build. But also I found an advice to enable Angular production mode with
enableProdMode(); in main.ts. Are these actions the same and trigger the same mechanism?

No they are not the same, but you also do not need to manually call enableProdMode(). The ionic build scripts deal with this for you.