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A number that has fewer digits than the number of digits in its prime factorization (including exponents). A046760: Pandigital numbers: 1023456789, 1023456798, 1023456879, 1023456897, 1023456978, 1023456987, 1023457689, 1023457698, 1023457869, 1023457896, ... Numbers containing the digits 0–9 such that each digit appears exactly once. A050278
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.
Python uses the + operator for string concatenation. Python uses the * operator for duplicating a string a specified number of times. The @ infix operator is intended to be used by libraries such as NumPy for matrix multiplication. [104] [105] The syntax :=, called the "walrus operator", was introduced in Python 3.8. It assigns values to ...
Stepping through evaluation of the expressions (expressions get replaced by their values) Separate windows for executing function calls (for explaining local variables and call stack) Variables and memory can be explained either by using simplified model (name → value) or by using more realistic model (name → address/id → value)
Stepping (Visual Studio) Overview of stepping support in Microsoft Corporation's IDE, Visual Studio; Tarraingim - A Program Animation Environment ; Program Animation as a way to teach and learn about Program Design and Analysis; Structured information on software testing (such as the History of Software Testing) published by Testing references
An example of a Python generator returning an iterator for the Fibonacci numbers using Python's yield statement follows: def fibonacci ( limit ): a , b = 0 , 1 for _ in range ( limit ): yield a a , b = b , a + b for number in fibonacci ( 100 ): # The generator constructs an iterator print ( number )
The word is related to the famous sequence of the same name (the Fibonacci sequence) in the sense that addition of integers in the inductive definition is replaced with string concatenation. This causes the length of S n to be F n +2, the (n +2)nd Fibonacci number. Also the number of 1s in S n is F n and the number of 0s in S n is F n +1.
It is also possible to delete a key from an association list, by scanning the list to find each occurrence of the key and splicing the nodes containing the key out of the list. [1] The scan should continue to the end of the list, even when the key is found, in case the same key may have been inserted multiple times.