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  2. Method cascading - Wikipedia

    en.wikipedia.org/wiki/Method_cascading

    One subtlety is that the value of a method call ("message") in a cascade is still the ordinary value of the message, not the receiver. This is a problem when you do want the value of the receiver, for example when building up a complex value. This can be worked around by using the special yourself method that simply returns the receiver: [2]

  3. Comparison of programming languages (list comprehension)

    en.wikipedia.org/wiki/Comparison_of_programming...

    Python uses the following syntax to express list comprehensions over finite lists: S = [ 2 * x for x in range ( 100 ) if x ** 2 > 3 ] A generator expression may be used in Python versions >= 2.4 which gives lazy evaluation over its input, and can be used with generators to iterate over 'infinite' input such as the count generator function which ...

  4. Software design pattern - Wikipedia

    en.wikipedia.org/wiki/Software_design_pattern

    Design an API to be method chained so that it reads like a DSL. Each method call returns a context through which the next logical method call(s) are made available. Yes Yes Yes Interpreter: Given a language, define a representation for its grammar along with an interpreter that uses the representation to interpret sentences in the language. Yes ...

  5. Higher-order function - Wikipedia

    en.wikipedia.org/wiki/Higher-order_function

    map function, found in many functional programming languages, is one example of a higher-order function. It takes as arguments a function f and a collection of elements, and as the result, returns a new collection with f applied to each element from the collection.

  6. MapReduce - Wikipedia

    en.wikipedia.org/wiki/MapReduce

    MapReduce is a programming model and an associated implementation for processing and generating big data sets with a parallel and distributed algorithm on a cluster. [1] [2] [3]A MapReduce program is composed of a map procedure, which performs filtering and sorting (such as sorting students by first name into queues, one queue for each name), and a reduce method, which performs a summary ...

  7. Fluent interface - Wikipedia

    en.wikipedia.org/wiki/Fluent_interface

    A common example is the iostream library in C++, which uses the << or >> operators for the message passing, sending multiple data to the same object and allowing "manipulators" for other method calls. Other early examples include the Garnet system (from 1988 in Lisp) and the Amulet system (from 1994 in C++) which used this style for object ...

  8. Type inference - Wikipedia

    en.wikipedia.org/wiki/Type_inference

    Type inference on the map function proceeds as follows. map is a function of two arguments, so its type is constrained to be of the form a-> b-> c. In Haskell, the patterns [] and (first: rest) always match lists, so the second argument must be a list type: b = [d] for some type d.

  9. Dart (programming language) - Wikipedia

    en.wikipedia.org/wiki/Dart_(programming_language)

    The Dart software development kit (SDK) ships with a standalone Dart runtime. This allows Dart code to run in a command-line interface environment. The SDK includes tools to compile and package Dart apps. [30] Dart ships with a complete standard library allowing users to write fully working system apps like custom web servers. [31]