generator object

This article introduces the content is about PHP Generator generator Understanding, has a certain reference value, now share to everyone, the need for friends can refer to Reprinted and collated from: Send where, snow, the Corner, PHP

In Python, List,string,dict is an iterative object that can be traversed by a for statement.IteratorsThe iterator object requires an object that supports the iterator protocol, and in Python, the __iter__ () and Next () methods of the object are

Before formally contacting the generator, Let's start by understanding some conceptsContainer ( container )A container is a data structure that organizes multiple elements together, and the elements in a container can be iterated over one after

The usage and example of the Python coroutine are described in detail, and the python coroutine is described in detail. Syntactically, coroutine is similar to generator, and is a function that defines the body containing the yield keyword. However,

The generator is a very cool feature in python.2.2 becomes a part of the standard. In many cases, it allows you to simplify operations related to unbounded (infinite) sequences in an elegant and lower memory consumption mode. A generator is a

Initial PHP experience and initial php experiencePHP coroutine initial experience By warezhou 2014.11.24 Since the last attempt to add coroutine to PHP through the C extension failed, Zend is almost zero in the short term and can only be used as a

In-depth study of python yield, generator, and pythonyield PrefaceIt is hard to say that you will do things you have never used and that you have never understood. Although I have been familiar with the concept of python coroutine before, I am just

1.Generator ExpressionsA generator expression is a simple generator notation represented by parentheses:Generator_expression:: = "(" Expression comp_for ")"The generator expression produces a generator object whose syntax and for are similar, out of

1 /*************************************************************************2 > File Name:test_random_device.cc3 > Author:sanghai4 > Mail: [email protected]5 > Created time:2017 August 12 Saturday 02:11 04 seconds6 **********************************

1. List-Generated>>> [i**2 for I in range (10)][0, 1, 4, 9, 16, 25, 36, 49, 64, 81]This process takes elements from the range (10) list, calculates the square of the element, and then puts it in the other list2. The code in "1" can be written in

Syntactically, the Cheng Builder is similar to a function that defines the yield keyword in the body.The use of yield in a process: yield in the association usually appears to the right of the expression , for example: Datum = yield, can

This article mainly refers to from a blog post and Cplusplus and cppreferrence. The blog post is a translation of the pseudo-random number on the Cplusplus, which is referred to in the following section.1. Pseudo-random number generation function in

1. Imagine a scene: Imagine, I want 100 primes, and then add and sum them. The usual idea is to find a tool (function) that can provide at least 100 primes at a time, and let it give me the 100 primes (return a list with 100 primes at a time). For 10

In Python, all collections can be iterated, and within the Python language, iterators are used to supportFor loopBuilding and extending collection typesTraverse a text file line by rowList derivation, dictionary derivation, and set derivationTuple

This article illustrates the simple use of Python iterators and share them for your reference. The specific analysis is as follows: A builder expression is an iterator that is used to generate sequence parameters when a function is called The

As you may have heard, the function with yield is called generator (generator) in Python, what is generator?Let's throw away the generator and show the concept of yield with a common programming topic.How to generate Fibonacci columnsThe Fibonacci

# This is a learning note for the Liaoche teacher Python tutorial1 , overview We have learned list, tuple, dict, set, str , Span style= "Font-family:simsun;background:lime;background:lime" >generator, generator function These can be used

First, generator1. ConceptIn Python, a mechanism that loops one side of the computation, called the generator: generatorCreate generator: G = (x*2 for x in range (5))The next return value of the generator can be obtained through the next (generator)

Functions that contain yield statements are specifically compiled into generator functions, and when the function is called, they return a generator object that supports the iterator interface. The function may have a return statement, but its

1. GeneratorThe essence of the generator is the iterator,The simplest generator function is as follows:1 deffoo (x): 1-4 rows defines a simple generator function2 yieldX+1 yield and return are different, return ends the entire function3