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coding tutorial

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php中文网 Courses
php中文网 Courses
Mar 31, 2025 · Backend Development

How to Get String Length in PHP Using strlen

This article explains how to use PHP's built‑in strlen function to obtain the length of a string, demonstrates the code with a "Hello World!" example, discusses byte‑versus‑character counting, and highlights considerations for multibyte encodings.

Backend DevelopmentPHPcoding tutorial
0 likes · 4 min read
How to Get String Length in PHP Using strlen
Python Programming Learning Circle
Python Programming Learning Circle
Feb 27, 2025 · Fundamentals

Understanding Regular Expressions in Python with Practical Code Examples

This article introduces Python's regular expression capabilities, covering fundamental concepts, metacharacters, character classes, quantifiers, and practical usage of the re module's functions such as search, match, findall, and sub, with clear code examples.

Pattern MatchingPythoncoding tutorial
0 likes · 9 min read
Understanding Regular Expressions in Python with Practical Code Examples
php中文网 Courses
php中文网 Courses
Jan 22, 2025 · Backend Development

Using PHP strlen to Get the Length of a String

This article explains how PHP's built‑in strlen function works to return the byte length of a string, demonstrates its usage with sample code, discusses the difference between byte and character counts, and highlights considerations for multibyte encodings.

Backend DevelopmentPHPcoding tutorial
0 likes · 4 min read
Using PHP strlen to Get the Length of a String
Test Development Learning Exchange
Test Development Learning Exchange
Dec 24, 2024 · Fundamentals

A Comprehensive Guide to Using Regular Expressions in Python

This article introduces Python's built‑in re module, explains how to import it, craft raw‑string patterns, and demonstrates common functions such as findall, match, search, sub, split, as well as compiling patterns, using match objects, flags, meta‑characters, and handling Unicode encoding for robust text processing.

coding tutorialre moduleregex
0 likes · 8 min read
A Comprehensive Guide to Using Regular Expressions in Python
JD Tech Talk
JD Tech Talk
Nov 7, 2024 · Databases

Understanding Bloom Filters and Cuckoo Filters

This article explains Bloom filters and Cuckoo filters, covering their principles, implementations, and practical applications in database optimization.

Bloom FilterCuckoo filterData Structures
0 likes · 12 min read
Understanding Bloom Filters and Cuckoo Filters
php中文网 Courses
php中文网 Courses
Jul 11, 2024 · Backend Development

Using PHP array_keys() Function: Syntax, Parameters, and Practical Examples

This article explains the PHP array_keys() function, detailing its syntax, optional parameters, and demonstrating its use with three code examples that cover indexed, associative, and multidimensional arrays, helping developers retrieve array keys efficiently.

Backend DevelopmentPHParray-functions
0 likes · 5 min read
Using PHP array_keys() Function: Syntax, Parameters, and Practical Examples
Python Programming Learning Circle
Python Programming Learning Circle
Dec 14, 2023 · Fundamentals

Python Regular Expressions with the re Module: Syntax, Functions, and Practical Examples

This article introduces regular expressions, explains Python's re module and its core functions such as match, search, and sub, and demonstrates their usage with clear code examples and visual illustrations of special syntax, character classes, and grouping constructs.

Pythoncoding tutorialre module
0 likes · 8 min read
Python Regular Expressions with the re Module: Syntax, Functions, and Practical Examples
php中文网 Courses
php中文网 Courses
Nov 18, 2023 · Backend Development

Understanding PHP strlen(): Syntax, Examples, and Usage

This article explains PHP's strlen() function, detailing its syntax, parameters, and behavior, and provides two practical code examples showing how to obtain string lengths with and without surrounding spaces, while noting encoding and special‑character considerations.

PHPcoding tutorialstring length
0 likes · 4 min read
Understanding PHP strlen(): Syntax, Examples, and Usage
Test Development Learning Exchange
Test Development Learning Exchange
May 30, 2021 · Backend Development

Generating Barcodes in Python with Pillow and pyBarcode

This guide explains how to install the Pillow and pyBarcode Python packages and demonstrates two methods for generating various barcode formats—such as EAN13, Code39, and UPC—using the pyBarcode library, including code examples, configuration options, and saving the output as image files.

BarcodePythoncoding tutorial
0 likes · 4 min read
Generating Barcodes in Python with Pillow and pyBarcode
Test Development Learning Exchange
Test Development Learning Exchange
Jun 19, 2019 · Fundamentals

Using Python's zip() Function to Parameterize Multiple Variables in API Requests

This article explains how to use Python's built‑in zip() function to combine multiple iterables, enabling simultaneous parameterization of several variables in a single API request, demonstrates syntax differences between Python 2 and 3, and provides a concrete code example that constructs URLs from zipped lists.

API testingPythoncoding tutorial
0 likes · 3 min read
Using Python's zip() Function to Parameterize Multiple Variables in API Requests
Test Development Learning Exchange
Test Development Learning Exchange
Feb 7, 2019 · Fundamentals

Generating Numbered Images with Python Pillow (PIL)

This tutorial demonstrates how to programmatically add sequential numbers to a base image, generate a series of new images, and save each one using Python's Pillow library, providing a practical example of automated image processing.

AutomationPythoncoding tutorial
0 likes · 2 min read
Generating Numbered Images with Python Pillow (PIL)
Java Captain
Java Captain
Sep 27, 2018 · Fundamentals

A Beginner's Guide to Regular Expressions: Basics and Advanced Topics

This tutorial introduces regular expressions across programming languages, covering fundamental metacharacters, quantifiers, grouping, alternation, character classes, assertions, capturing, backreferences, greedy vs. lazy matching, and provides practical Java code examples for common validation tasks.

JavaPattern Matchingcoding tutorial
0 likes · 17 min read
A Beginner's Guide to Regular Expressions: Basics and Advanced Topics
Test Development Learning Exchange
Test Development Learning Exchange
Jul 12, 2018 · Fundamentals

Python built‑in functions: sorted, eval, and upper – syntax, parameters, and practical examples

This article explains how to use Python's sorted, eval, and upper built‑in functions, covering their syntax, optional arguments such as key, cmp, and reverse, safety considerations for eval, and concrete code examples that demonstrate sorting lists, converting strings to uppercase, and evaluating literals.

coding tutorialevalfundamentals
0 likes · 6 min read
Python built‑in functions: sorted, eval, and upper – syntax, parameters, and practical examples