[email protected] Only English letters, numbers, underscores, full stops, and underscores are allowed
^[a-zA-Z0-9_-][emailprotected ][a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$
高子航[email protect
Category: Regexp
Regular expressions, also known as regular expressions. (English: Regular Expression, often abbreviated as regex, regexp or RE in the code), a concept of computer science. Regular tables are usually used to retrieve and replace texts that conform to a certain pattern (rule). Many programming languages support string manipulation using regular expressions. For example, a powerful regular expression engine is built in Perl, and the Java language comes with it. The concept of regular expressions was first popularized by tools in Unix (such as sed and grep). Regular expressions are usually abbreviated as “regex”. The singular includes regexp and regex, and the plural includes regexps, regexes, and regexen.
Regular expression – AWK line symbol regular expression
I have a simple awk script called “script.awk”, which contains:
//some_simple_string / {print $0;} I use it to parse some files containing the following content:
(by using: cat file | awk -f
String objects and regular expressions
一·String object method
Concept: multiple characters Read-only character array………String is essentially an array
and an array
1. The original array can be modified at will, bu
String string running group
1 /**
2 * THis_is_a_cat
3 * This Is A Cat
4 *
5 * Cat A Is This
6 * @author Administrator
7 *
8 */
9 public class Test07Str {
10 public static void main(String[] args) {
11
PAT Basic 1024 Scientific Counting Method (20 points) Advanced 1073 Scientific Notation (20 points)
Scientific notation is a convenient method used by scientists to represent very large or very small numbers. It satisfies the regular expression [+-][1-9]. [0-9]+E[+-][0-9]+, that is, the integer p
JMeter Save Return to CSV
Add a thread group, then right-click and select “Regular Expression Extractor”
Configure regular expressions:
Add the beanshell postprocessor:
Save the extracted data:
Code:
Grok resolution regular expression
I use the following regular expression:
INT (?:[+-]?(?:[0- 9]+))
VALUE ([0-9]+)
SPACE \s*
DATA .*?
USERNAME [a-zA-Z0-9._- ]+
YEAR (?>\d\d){1,2}
MONTHNUM (?:0?[1-9]|1[0-2])
MONTHDAY (? :(?:0[1
Use regular to replace the src of the img tag
Requirement: Due to system switching, it is required to patch the src attribute of the img tag in the webpage content in the database. For example: After the replacement is required: Use regular to solve, the code is as follows (ApiUtil.java static method) Java code collection code Test code: Java code collection code The key […]