... Cache-Control: no-cache has the same meaning for requests but is actually also defined for responses, meaning "If you want to use a cached copy of this in future, you must first check with me that it is up-to-date (i.e. perform revalidation)". – clime Mar...

...th( os.path.join(os.getcwd(), os.path.dirname(__file__))) The join() call prepends the current working directory, but the documentation says that if some path is absolute, all other paths left of it are dropped. Therefore, getcwd() is dropped when dirname(__file__) returns an absolute path. Als...

...ist, value): getFromDict(dataDict, mapList[:-1])[mapList[-1]] = value All but the last element in mapList is needed to find the 'parent' dictionary to add the value to, then use the last element to set the value to the right key. Demo: >>> getFromDict(dataDict, ["a", "r"]) 1 >>&g...

... are described in this International Standard as unspecified (for example, order of evaluation of arguments to a function). Where possible, this International Standard defines a set of allowable behaviors. These define the nondeterministic aspects of the abstract machine. Certain other operations ar...

...very compiler is required to provide "C" linkage A linkage specification shall occur only in namespace scope All function types, function names and variable names have a language linkage See Richard's Comment: Only function names and variable names with external linkage have a language linkage Two ...

...nion (select ID from Design where AccountID = 1 and Rendered = 'True') order by ID limit 0, 51 Here's the docs for it https://dev.mysql.com/doc/refman/5.0/en/union.html share | improve this an...

...the server. There is a guarantee that data will not arrive in a different order than you sent it, and there is a reasonable guarantee that data will not be damaged. A datagram socket is like passing a note in class. Consider the case where you are not directly next to the person you are passing t...

... It is generally a bad pattern to kill a thread abruptly, in Python and in any language. Think of the following cases: the thread is holding a critical resource that must be closed properly the thread has created several other threads ...

...lable, an object implements a method, def __len__(self) , and then it is called when you write len(obj) . 7 Answers ...

... Redefinitions of names will override the old definitions, so this is generally not a problem, but if the new version of a module does not define a name that was defined by the old version, the old definition is not removed. If a module imports objects from another module using from ... import ..., ...