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Jawk is a project to implement AWK in Java, hosted on SourceForge. [20] Extensions to the language are added to provide access to Java features within AWK scripts (i.e., Java threads, sockets, collections, etc.). xgawk is a fork of gawk [21] that extends gawk with dynamically loadable libraries. The XMLgawk extension was integrated into the ...
Standard examples of data-driven languages are the text-processing languages sed and AWK, [1] and the document transformation language XSLT, where the data is a sequence of lines in an input stream – these are thus also known as line-oriented languages – and pattern matching is primarily done via regular expressions or line numbers.
For example, the following Cuneiform program allows the applications of f and g to run in parallel while h is dependent and can be started only when both f and g are finished. let output-of-f : File = f(); let output-of-g : File = g(); h( f = output-of-f, g = output-of-g );
This flip-flop data type would provide a function that queries and updates its state at the same time. This function gets the actual data on which the switching predicates depend and passes that data to the two predicates, if necessary. Due to this inherent complexity, only few programming languages have adopted the flip-flop operator.
The bridge pattern can also be thought of as two layers of abstraction. When there is only one fixed implementation, this pattern is known as the Pimpl idiom in the C++ world. The bridge pattern is often confused with the adapter pattern, and is often implemented using the object adapter pattern; e.g., in the Java code below.
The patterns generally have the form of either sequences or tree structures. Uses of pattern matching include outputting the locations (if any) of a pattern within a token sequence, to output some component of the matched pattern, and to substitute the matching pattern with some other token sequence (i.e., search and replace).
Join-patterns provides a way to write concurrent, parallel and distributed computer programs by message passing.Compared to the use of threads and locks, this is a high level programming model using communication constructs model to abstract the complexity of concurrent environment and to allow scalability.
OmniMark treats input as a flow that can be scanned once, rather than as a static collection of data that supports random access. Much of an OmniMark program is in the form of condition=>action rule where the condition recognizes a length of data to be acted upon and the action specifies what is to be done with the data.