[wp-hackers] register_*() vs. add_*()?

[SWORD Studios]

Semantics
On Mar 19, 2011 2:17 PM, "Mike Schinkel" <mikeschinkel at newclarity.net>
wrote:
> I'm trying to understand the rationale between prefixing core functions
with "register_" vs. "add_" as a prefix. I can't seem to recognize why one
is used at times and the other is used at times. Examples from core:
>
> add_shortcode()
> add_rewrite_rule()
> add_action()
> add_custom_background()
>
> register_post_type()
> register_taxonomy()
> register_nav_menu()
> register_sidebar()
>
> I'm working on code I could envision offering up as proposed additions to
core so that's why I'm interested in the difference.
>
> Thanks in advance.
>
> -Mike
> P.S. I think I asked this question on trac before but didn't get a good
answer.
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