[issue28178] allow to cache_clear(some_key) in lru_cache

2016-09-17 Thread Raymond Hettinger 

Raymond Hettinger added the comment:

FYI, here is a starting point for rolling your own variants.  The OrderedDict 
makes this effortless.  http://pastebin.com/LDwMwtp8

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[issue28178] allow to cache_clear(some_key) in lru_cache

2016-09-17 Thread Raymond Hettinger 

Raymond Hettinger added the comment:

I concur with Nick that the API needs to be relatively simple.

The availability of a fast ordered dictionary now makes it very easy for people 
to roll their own customizations.

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resolution:  -> rejected
status: open -> closed

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[issue28178] allow to cache_clear(some_key) in lru_cache

2016-09-17 Thread Raymond Hettinger 

Changes by Raymond Hettinger :


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assignee:  -> rhettinger

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[issue28178] allow to cache_clear(some_key) in lru_cache

2016-09-17 Thread Nick Coghlan 

Nick Coghlan added the comment:

I'm wary of adding too much complexity to the standard cache API, especially 
when it's something that isn't found in 
http://boltons.readthedocs.io/en/latest/cacheutils.html either.

I do think it could be a good idea to provide some "See Also" links to 
alternate caching libraries for folks that are looking for features that 
standard implementation doesn't provide.

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[issue28178] allow to cache_clear(some_key) in lru_cache

2016-09-16 Thread Serhiy Storchaka 

Serhiy Storchaka added the comment:

Method with name clear() usually removes all content. It would be better to use 
different name: remove() or invalidate() (is there a precedence in other 
caches?).

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nosy: +ncoghlan, rhettinger, serhiy.storchaka
versions: +Python 3.7

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[issue28178] allow to cache_clear(some_key) in lru_cache

2016-09-16 Thread Sébastien de Menten 

New submission from Sébastien de Menten:

It would be useful to be able to clear a single item in the cache of a 
lru_cache decorated function.

Currently with:

@lru_cache
def foo(i):
  return i*2
foo(1)# -> add 1 as key in the cache
foo(2)# -> add 2 as key in the cache
foo.clear_cache() # -> this clears the whole cache
foo.clear_cache(1) # -> this would clear the cache entry for 1

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components: Library (Lib)
messages: 276680
nosy: Sébastien de Menten
priority: normal
severity: normal
status: open
title: allow to cache_clear(some_key) in lru_cache
type: enhancement

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