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PP implements: Macros, literate programming, GraphViz, PlantUML and ditaa diagrams, Bash, Cmd, PowerShell, Python and Haskell scripts. [10] minimac minimac is a minimalist general purpose macro processor. It operates as a character stream filter, recursively expanding macros as they are encountered.
It is not to be confused with macros, the mechanism often found in programming languages (like C or Scala) to express substitution rules for program pieces. Macroprogramming originated in the context of wireless sensor network programming [ 3 ] [ 4 ] [ 5 ] and found renewed interest in the context of the Internet of Things [ 6 ] and swarm ...
A parameterized macro is a macro that is able to insert given objects into its expansion. This gives the macro some of the power of a function. As a simple example, in the C programming language, this is a typical macro that is not a parameterized macro, i.e., a parameterless macro: #define PI 3.14159
Python's is operator may be used to compare object identities (comparison by reference), and comparisons may be chained—for example, a <= b <= c. Python uses and, or, and not as Boolean operators. Python has a type of expression named a list comprehension, and a more general expression named a generator expression. [78]
The input–process–output model. The input–process–output (IPO) model, or input-process-output pattern, is a widely used approach in systems analysis and software engineering for describing the structure of an information processing program or other process.
This example aims to improve the readability of the X macro usage by: Prefix the name of the macro that defines the list with "FOR_". Pass name of the worker macro into the list macro. This both avoids defining an obscurely named macro (X), and alleviates the need to undefine it. Use the syntax for variadic macro arguments "..." in the worker ...
In general, every clause that only contains constraints in the body is considered a fact. For example, a clause A(X):-X>0,X<10 is considered a fact as well. For this extended definition of facts, some facts may be equivalent while not syntactically equal. For example, A(q) is equivalent to A(X):-X=q and both are equivalent to A(X):-X=Y, Y=q. To ...
In some cases language features may create many duplicate expressions. For instance, C macros, where macro expansions may result in common subexpressions not apparent in the original source code. Compilers need to be judicious about the number of temporaries created to hold values.