Mercurial > cpython-lru_cache-weakref
diff Doc/lib/libstdtypes.tex @ 17594:bf94af396b1e legacy-trunk
Implement, test and document "key in dict" and "key not in dict".
I know some people don't like this -- if it's really controversial,
I'll take it out again. (If it's only Alex Martelli who doesn't like
it, that doesn't count as "real controversial" though. :-)
That's why this is a separate checkin from the iterators stuff I'm
about to check in next.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 20 Apr 2001 16:50:40 +0000 |
| parents | 68bd96e426e3 |
| children | d638e419c304 |
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--- a/Doc/lib/libstdtypes.tex Thu Apr 19 21:55:14 2001 +0000 +++ b/Doc/lib/libstdtypes.tex Fri Apr 20 16:50:40 2001 +0000 @@ -867,8 +867,14 @@ {(1)} \lineiii{\var{a}.clear()}{remove all items from \code{a}}{} \lineiii{\var{a}.copy()}{a (shallow) copy of \code{a}}{} + \lineiii{\var{k} \code{in} \var{a}} + {\code{1} if \var{a} has a key \var{k}, else \code{0}} + {} + \lineiii{\var{k} not in \var{a}} + {\code{0} if \var{a} has a key \var{k}, else \code{1}} + {} \lineiii{\var{a}.has_key(\var{k})} - {\code{1} if \var{a} has a key \var{k}, else \code{0}} + {Equivalent to \var{k} \code{in} \var{a}} {} \lineiii{\var{a}.items()} {a copy of \var{a}'s list of (\var{key}, \var{value}) pairs} @@ -879,11 +885,11 @@ {(3)} \lineiii{\var{a}.values()}{a copy of \var{a}'s list of values}{(2)} \lineiii{\var{a}.get(\var{k}\optional{, \var{x}})} - {\code{\var{a}[\var{k}]} if \code{\var{a}.has_key(\var{k})}, + {\code{\var{a}[\var{k}]} if \code{\var{k} in \var{a}}}, else \var{x}} {(4)} \lineiii{\var{a}.setdefault(\var{k}\optional{, \var{x}})} - {\code{\var{a}[\var{k}]} if \code{\var{a}.has_key(\var{k})}, + {\code{\var{a}[\var{k}]} if \code{\var{k} in \var{a}}}, else \var{x} (also setting it)} {(5)} \lineiii{\var{a}.popitem()}