[cmucl-imp] Snapshot 2015-06

[Raymond Toy]

>>>>> "Fare" == Far  <Far> writes:

    Fare> On Thu, Jun 11, 2015 at 2:40 AM, Carl Shapiro <carl.shapiro at gmail.com> wrote:
    >> On Wed, Jun 10, 2015 at 11:09 PM, Faré <fahree at gmail.com> wrote:
    >>> 
    >>> Lazy getenv, putenv — and if you want to get all of them, or to pass
    >>> all of them, use an equal hash-table with strings as key, not an alist
    >>> with keywords as keys.
    >> 
    >> Thanks for the clarification.
    >> 
    >> Is your issue with the search time?  The libc getenv and putenv uses a
    >> linear search with a linear time compare of strings.  It is unlikely to be
    >> faster than an a-list search.
    >> 
    Fare> My issue is that ext:*environment-list* is an abstraction inversion.
    Fare> Instead of providing a higher-level view on an existing API, it
    Fare> reinvents a new low-level data structure that doesn't provide any
    Fare> performance advantage (indeed, only slowdown) yet introduces a new
    Fare> semantic gap (albeit small) between what was and what is, and only
    Fare> gets in the way of a further API improvement.

My assumption is that it exists so that execve or whatever can be
called with a new environment that can be easily manipulated from
lisp.

    Fare> But if you declare it the official way to access the environment in
    Fare> cmucl, I'll revert to using it.

I will put back unix-getenv into the core.  And I'll update the main
tarball to include the unix contrib.

--
Ray