


Multidimensional array [][]
and [,]
C# provides two types of multidimensional arrays: jagged arrays ([][]
) and uniform arrays ([,]
).
Jagged array
Jagged arrays are arrays of arrays. This means that each element in the jagged array is an array of values, and these value arrays can be of different lengths.
Uniform array
A uniform array is an array with a fixed number of dimensions and a fixed size for each dimension.
Example
The following code creates a jagged array:
double[][] ServicePoint = new double[10][];
The above code creates an array of 10 elements, where each element is a reference to an array of double-precision floating point numbers. The size of each internal array can be different.
Error in option 1
The following code will produce a syntax error:
double[][] ServicePoint = new double[10][9];
This error occurs because the size of the internal array is specified when the array is created, which is not allowed for jagged arrays. The correct way to create a jagged array is to specify only the size of the outer array and then allocate the size to each inner array separately.
Assign values to uniform array rows
The following code will generate an error:
double[,] ServicePoint = new double[10, 9]; double[] d = new double[9]; ServicePoint[0] = d;
This error occurs because the entire array cannot be assigned to a unified array. Each element must be assigned a value. To assign a value to a single element, the row and column index must be specified:
ServicePoint[0, 0] = d[0]; ServicePoint[0, 1] = d[1]; // ... //
The above is the detailed content of C# Multidimensional Arrays: When to Use `[][]` (Jagged) vs `[,]` (Uniform)?. For more information, please follow other related articles on the PHP Chinese website!

This article explains the C Standard Template Library (STL), focusing on its core components: containers, iterators, algorithms, and functors. It details how these interact to enable generic programming, improving code efficiency and readability t

This article details efficient STL algorithm usage in C . It emphasizes data structure choice (vectors vs. lists), algorithm complexity analysis (e.g., std::sort vs. std::partial_sort), iterator usage, and parallel execution. Common pitfalls like

The article discusses dynamic dispatch in C , its performance costs, and optimization strategies. It highlights scenarios where dynamic dispatch impacts performance and compares it with static dispatch, emphasizing trade-offs between performance and

C 20 ranges enhance data manipulation with expressiveness, composability, and efficiency. They simplify complex transformations and integrate into existing codebases for better performance and maintainability.

This article details effective exception handling in C , covering try, catch, and throw mechanics. It emphasizes best practices like RAII, avoiding unnecessary catch blocks, and logging exceptions for robust code. The article also addresses perf

The article discusses using move semantics in C to enhance performance by avoiding unnecessary copying. It covers implementing move constructors and assignment operators, using std::move, and identifies key scenarios and pitfalls for effective appl

Article discusses effective use of rvalue references in C for move semantics, perfect forwarding, and resource management, highlighting best practices and performance improvements.(159 characters)

C memory management uses new, delete, and smart pointers. The article discusses manual vs. automated management and how smart pointers prevent memory leaks.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Zend Studio 13.0.1
Powerful PHP integrated development environment

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Notepad++7.3.1
Easy-to-use and free code editor

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
