Sometimes, we like to go to the website to browse some beautiful pictures, or we need some good-looking pictures as materials in our daily work and study, or we want to pass the time and relax when we are bored. Click on the links one by one to browse? I think in this era of data explosion, is it a bit time-consuming to do this, let's ...
Posted by psychotomus on Tue, 24 May 2022 22:50:47 +0300
[summary] regular expression (2022.05.05)
1. Regular expression
1.1 understanding regularity
Regular expression: a tool to solve string problems (a tool to make complex string problems simple)
1.2 matching symbols
Ordinary character - represents the symbol itself in a regular expression. The requirement for the characters in the string ...
Posted by dickd on Fri, 06 May 2022 04:06:43 +0300
5.5 Regular Expression Learning Notes and Homework
Understanding Regular Expressions
Regular expression: A tool for solving string problems (a tool that makes complex string problems easy)
Question: Verify the validity of the entered mobile number.
abc - not
123 - No
12345678901 - Illegal
13354627381 - Legal
1335462738189 - Illegal
Posted by kurtsu on Thu, 05 May 2022 19:12:51 +0300
Chapter 1 regular expression character matching introduction
Chapter 2: regular expression position matching strategy
Chapter 3 the role of regular expression parentheses
What is discussed in each chapter?
Regular is a matching pattern, either matching characters or matching positions.
Chapter 1 and Chapter 2 explain the basis of r ...
Posted by Fabis94 on Thu, 05 May 2022 10:04:09 +0300
Regular expressions complete summary, collection
regular expression is a method of expressing text patterns (i.e. string structures).
There are two ways to create:
One is to use literal values, with slashes indicating the beginning and end.
var regex = /xyz/
The other is to use RegExp constructor.
var regex = new RegExp('xyz' ...
Posted by mikeq on Thu, 05 May 2022 08:30:53 +0300
Regular expression is a special character sequence, which can help you easily check whether a string matches a pattern.
python is implemented by re module
re. The search () method is used to search the string for the first occurrence of a regular expression pattern Search for non-existent strings and return None,
Posted by thefisherman on Mon, 18 Apr 2022 00:13:26 +0300
Absrtact: when there is a problem with the database, it can degrade and query the data from the locally cached data,
CoralCache is such a middleware to improve the availability of microservices.
In some scenarios, microservices rely on some configuration items or a small amount of data in the database, but when the database i ...
Posted by gapern on Sun, 17 Apr 2022 22:41:54 +0300
I have a string, "004-034556", that I want to split into two strings:
I have a string, "004-034556", and I want to divide it into two strings:
That means the first string will contain the characters before '-', and the second string will contain the characters after '-'. I also want to check if the strin ...
Posted by Dedix on Sun, 17 Apr 2022 12:25:19 +0300
Day 15 regular expression
1. What is a regular expression
Regular expressions are tools that make complex string processing easier
2. Regular syntax
from re import fullmatch,search,findall
# Import from re module before use
Fullmatch (regular expression, string) -- judge whether the specified string meets the rules described by the regula ...
Posted by markstrange on Sat, 16 Apr 2022 20:49:27 +0300
Give you a string s and a character rule p, please implement a support '.' Matches the regular expression of '*'. ‘.’ Match any single character '*' matches zero or more preceding elements The so-called matching is to cover the whole string s, not part of the string. Example 1: Input: s = "aa" p = "a" ...
Posted by Norman Graham on Thu, 14 Apr 2022 12:06:17 +0300