c# cookbook

Python cookbook (data structure and algorithm) records grouped operation examples based on fields, pythoncookbook This example describes how to group records by field in Python. We will share this with you for your reference. The details are as follows: Problem:You want to group iterative data based on a dictionary or a specific Dictionary (such as a date) of an object instance. Solution:itertools.groupby()Functions are particularly useful when groupi

Recently reading "Unity Shaders and Effects Cookbook", Chinese Version: "Unity Shader and screen effects development Secrets"SOURCE Download: https://www.packtpub.com/books/content/support/11712Color map: Https://www.packtpub.com/sites/default/files/downloads/5084OT_Images.pdfPDF English Version: http://vdisk.weibo.com/s/dCWbnaijI_d37I bought the Chinese version of the book image is black and white, can be compared with the English PDF color map and t

one, as the first stage of the Python basic learning does not have to read a lot of books, personally think that the following three books enough (personal preferences, from the beginning to the other): (1) Liaoche's "Python3 Basic Course"; (2) "Python Cookbook" (3) "Machine learning Combat" (Python version) Then is F1, Google, Baidu. After reading Liao's "Basic Course", opened the brain, has a basic understanding of python; Next, learn the bo

Python cookbook (data structure and algorithm) dictionary-related computing example, pythoncookbook This example describes the computation problems related to the Python cookbook (data structure and algorithm) dictionary. We will share this with you for your reference. The details are as follows: Problem:Perform Various calculations (such as minimum, maximum, and sorting) on the data in the dictionary ). So

Python cookbook (data structures and algorithms) keeps the dictionary orderly. This example describes how to keep the dictionary in order by using Python. We will share this with you for your reference. The details are as follows: Problem:When creating a dictionary and performing iteration or serialization operations on the dictionary, you can also control the order of its elements; Solution:You can use the OrderedDict class in the collections module

Python cookbook (data structure and algorithm) is used to break down elements from any length of iteratable objects. This example describes how to use python to break down elements from iteratable objects of any length. We will share this with you for your reference. The details are as follows: N elements are extracted from an Iterated object, but the length of the iterated object may exceed N, resulting in an exception of "too many decomposition valu

Python cookbook (data structure and algorithm) uses a public key to sort the dictionary list. This example describes how to sort the dictionary list by using public keys in Python. We will share this with you for your reference. The details are as follows: Problem:Sort the list by values in one or more dictionaries. Solution:In the operator moduleitemgetter()The function is very simple to sort such structures. # Sort a list of a dicts on a common keyr

Python cookbook (data structure and algorithm) is used to filter and extract elements in a sequence. This article describes how to filter and extract elements in a sequence using Python. We will share this with you for your reference. The details are as follows: Problem:Extracts values from a sequence or deletes the sequence according to certain criteria. Solution:List derivation, generator expression, use built-infilter()Function 1. List derivation m

Nhibernate.3.0.cookbook the sixth section of the first chapter handling versioning and concurrency translationChapter II Mapping a class with XMLChapter I section III Creating class hierarchy mappingsChapter Fourth Section mapping a one-to-many relationshipChapter Fifth section setting up a base entity classHandling Versioning and concurrencyVersion control and concurrencyIn any multi-user operating system, in order to handle concurrent updates and ve

Powerful SQL: SQL Cookbook Reading Notes 1-sorting the mixed data of letters and numbers recently, I am reading a really good book on SQL Cookbook. Many solutions are very subtle, I really realized that SQL is powerful. Note: I use ORACLE 11g and Below is an example in book 2.4 -- Sort the data sequence of mixed letters and numbers. First, we need a table emp in the book, the table creation file or statemen

Parsing and traversing documentsParsing HTML documents:String html = "+ "Document doc = jsoup.parse (HTML);The parser parses the HTML file as much as possible, regardless of whether the HTML file is well-formed. It can be handled very well:(1) Non-finished labels (e.g. (2) Unspecified label (for example: Packaging (3) Create a document structure reliably (contains a head and a body of HTML, only the appropriate elements in the head)Object model of the documentThe document contains elements and T

In the daily Java code development process, it is inevitable to have multi-threaded requirements, mastering the Java multithreading and concurrency mechanism is the Java programmer to write more robust and efficient code base. I find the domestic published on the Java Multi-threading and concurrency of Chinese books and translation books, we unanimously recommended is "Java Concurrency in practice", the author has not read the original English, I look at its translation version of "Java Concurre