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List comprehension is a syntactic construct available in some programming languages for creating a list based on existing lists. It follows the form of the mathematical set-builder notation (set comprehension) as distinct from the use of map and filter functions.
Here, the list [0..] represents , x^2>3 represents the predicate, and 2*x represents the output expression.. List comprehensions give results in a defined order (unlike the members of sets); and list comprehensions may generate the members of a list in order, rather than produce the entirety of the list thus allowing, for example, the previous Haskell definition of the members of an infinite list.
A classic example of a problem which a regular grammar cannot handle is the question of whether a given string contains correctly nested parentheses. (This is typically handled by a Chomsky Type 2 grammar, also termed a context-free grammar .)
Java Yes Yes Push-pull Yes EOF: WOUnit (JUnit), TestNG, Selenium in Project WONDER Yes Yes Yes Google Web Toolkit: Java, JavaScript Yes Yes JPA with RequestFactory JUnit (too early), jsUnit (too difficult), Selenium (best) via Java Yes Bean Validation ZK: Java, ZUML jQuery: Yes Push-pull Yes any J2EE ORM framework JUnit, ZATS HibernateUtil ...
Java: Application, business, client-side, general, mobile development, server-side, web Yes Yes Yes Yes Yes Yes Concurrent De facto standard via Java Language Specification JavaScript: Client-side, server-side, web Yes Yes Yes Yes No Yes prototype-based: Yes ECMA-262 standard Joy: Research No No Yes No No No Stack-oriented No jq "awk for JSON ...
In computer science, a generator is a routine that can be used to control the iteration behaviour of a loop. All generators are also iterators. [1] A generator is very similar to a function that returns an array, in that a generator has parameters, can be called, and generates a sequence of values.
Java JavaScript — Python FORTRAN, Jovial, Pascal, VHDL, HTML, PHP, XML A multi-platform tool for code analysis and comprehension of large code bases. Can recognize multiple dialects of C, C++ and C# like ANSI, K&R and Objective C++. Visual Expert: 2021-09-10 No; proprietary — — — — — —
It seems to me that almost every example language (almost only because a few look so alien that I can't comment) does not show *native* support for list comprehension. Rather, the examples show how to perform "List Comprehension" with the language's existing (non-native comprehension) syntax. A particularly good example of this is the C# example.