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In Unix-like operating systems, find is a command-line utility that locates files based on some user-specified criteria and either prints the pathname of each matched object or, if another action is requested, performs that action on each matched object.
In general programming practice, however, this is considered poor style, and recursion with named functions is suggested instead. Anonymous recursion via explicitly passing functions as arguments is possible in any language that supports functions as arguments, though this is rarely used in practice, as it is longer and less clear than ...
That program performed the expansion and supplied the expanded list of file paths to the command for execution. Glob was originally written in the B programming language . It was the first piece of mainline Unix software to be developed in a high-level programming language . [ 2 ]
The recursive program above is tail-recursive; it is equivalent to an iterative algorithm, and the computation shown above shows the steps of evaluation that would be performed by a language that eliminates tail calls. Below is a version of the same algorithm using explicit iteration, suitable for a language that does not eliminate tail calls.
Unlike many macroprocessors, m5 does not directly interpret its input. Instead it uses a two-pass approach in which the first pass translates the input to an awk program, and the second pass executes the awk program to produce the final output. pyexpander 2011 pyexpander is a general-purpose macro processor based on the Python programming ...
9. Kansas. When it comes to expensive states for homeowners, the state of Kansas doesn’t often come to mind. But it has an average property tax rate of 1.26%.
A classic example of recursion is the definition of the factorial function, given here in Python code: def factorial ( n ): if n > 0 : return n * factorial ( n - 1 ) else : return 1 The function calls itself recursively on a smaller version of the input (n - 1) and multiplies the result of the recursive call by n , until reaching the base case ...
Its name comes from the ed command g/re/p (global regular expression search and print), which has the same effect. [ 3 ] [ 4 ] grep was originally developed for the Unix operating system, but later became available for all Unix-like systems and some others such as OS-9 .