diff options
Diffstat (limited to 'Doc/lib/liboperator.tex')
| -rw-r--r-- | Doc/lib/liboperator.tex | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Doc/lib/liboperator.tex b/Doc/lib/liboperator.tex index 57ff773..81f1663 100644 --- a/Doc/lib/liboperator.tex +++ b/Doc/lib/liboperator.tex @@ -262,7 +262,8 @@ unbound methods, class objects, and instance objects which support the \begin{funcdesc}{isMappingType}{o} Returns true if the object \var{o} supports the mapping interface. -This is true for dictionaries and all instance objects. +This is true for dictionaries and all instance objects defining +\method{__getitem__}. \warning{There is no reliable way to test if an instance supports the complete mapping protocol since the interface itself is ill-defined. This makes this test less useful than it otherwise might @@ -271,7 +272,7 @@ be.} \begin{funcdesc}{isNumberType}{o} Returns true if the object \var{o} represents a number. This is true -for all numeric types implemented in C, and for all instance objects. +for all numeric types implemented in C. \warning{There is no reliable way to test if an instance supports the complete numeric interface since the interface itself is ill-defined. This makes this test less useful than it otherwise might @@ -281,7 +282,8 @@ be.} \begin{funcdesc}{isSequenceType}{o} Returns true if the object \var{o} supports the sequence protocol. This returns true for all objects which define sequence methods in C, -and for all instance objects. \warning{There is no reliable +and for all instance objects defining \method{__getitem__}. +\warning{There is no reliable way to test if an instance supports the complete sequence interface since the interface itself is ill-defined. This makes this test less useful than it otherwise might be.} |