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Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})
In Python, a metaclass is most easily defined as a subclass of type. class AttributeInitType ( type ): def __call__ ( self , * args , ** kwargs ): """Create a new instance.""" # First, create the object in the normal default way. obj = type . __call__ ( self , * args ) # Additionally, set attributes on the new object. for name , value in kwargs ...
In mathematics and in computer programming, a variadic function is a function of indefinite arity, i.e., one which accepts a variable number of arguments.Support for variadic functions differs widely among programming languages.
The observer design pattern is a behavioural pattern listed among the 23 well-known "Gang of Four" design patterns that address recurring design challenges in order to design flexible and reusable object-oriented software, yielding objects that are easier to implement, change, test and reuse.
In natural language processing, a word embedding is a representation of a word. The embedding is used in text analysis.Typically, the representation is a real-valued vector that encodes the meaning of the word in such a way that the words that are closer in the vector space are expected to be similar in meaning. [1]
PHP uses argc as a count of arguments and argv as an array containing the values of the arguments. [ 4 ] [ 5 ] To create an array from command-line arguments in the -foo:bar format, the following might be used:
Liskov's notion of a behavioural subtype defines a notion of substitutability for objects; that is, if S is a subtype of T, then objects of type T in a program may be replaced with objects of type S without altering any of the desirable properties of that program (e.g. correctness).
Argument Clinic" is a sketch from Monty Python's Flying Circus, written by John Cleese and Graham Chapman. The sketch was originally broadcast as part of the television series and has subsequently been performed live by the group. It relies heavily on wordplay and dialogue, and has been used as an example of how language works.