Re: Conventional name proposal: merge
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- Subject: Re: Conventional name proposal: merge
- From: steve donovan <steve.j.donovan@...>
- Date: 2012年12月14日 12:20:20 +0200
On Fri, Dec 14, 2012 at 8:19 AM, Dirk Laurie <dirk.laurie@gmail.com> wrote:
> merge(...): returns a new table containing all the pairs from all the
> tables given as arguments. In particular, if there is only one argument,
> returns a shallow copy. In case of duplicate keys, later values
> replace earlier ones. Nil arguments are treated as empty tables.
Penlight's tablex.merge is a little different:
http://stevedonovan.github.com/Penlight/api/modules/pl.tablex.html#merge
merge({alice=23,fred=34},{bob=25,fred=34}) is {fred=34}
merge({alice=23,fred=34},{bob=25,fred=34},true) is {bob=25,fred=34,alice=23}
since it distinguishes between 'intersection' (default) and 'union'
I'd say the default is exactly the wrong way around, personally...
steve d.