tashika vs. yappari

[taipeiguy]

Could someone please explain the difference between tashika and yappari?

Thanks!

[Psy]

tashika can be "certain" in the sense of "it is certain that..." or as an interjection meaning "if memory serves..." yappari means "as I thought."

It seems like I should write more, but I think that about covers it.

[markystar]

確かに is "of course" or "it's certain"

but by itself 確か is something like "if i remember correctly"