search
HomeBackend DevelopmentC++IEnumerable or IList: How to Avoid Multiple Enumeration Warnings?

IEnumerable or IList: How to Avoid Multiple Enumeration Warnings?

Navigating Multiple Enumeration Warnings When Using IEnumerable

Challenge:

Working with an IEnumerable requires consideration of potential multiple enumerations. In certain scenarios, this can trigger the ReSharper warning of "Possible multiple enumeration of IEnumerable."

Possible Solutions:

Changing the parameter to a List type sidesteps the warning but may restrict access to specific objects. Converting the IEnumerable to a List at the method's outset resolves the issue but introduces the perception of awkwardness.

Recommended Approach:

The primary concern with using IEnumerable as a parameter stems from its ambiguity regarding the number of enumerations intended. Modifying the method signature to specify IList or ICollection clarifies expectations for callers and prevents costly mistakes.

Alternatively, performing the .ToList() conversion at the method's start might be appropriate if using IEnumerable is crucial. However, this approach may be less efficient than specifying a more restrictive parameter type.

Additional Considerations:

The ideal solution would involve an interface that combines the functionality of IEnumerable, Count, and Indexer but excludes mutating methods. Unfortunately, such an interface currently does not exist in .NET, leaving us to weigh the pros and cons of each approach based on specific usage requirements.

The above is the detailed content of IEnumerable or IList: How to Avoid Multiple Enumeration Warnings?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How does the C   Standard Template Library (STL) work?How does the C Standard Template Library (STL) work?Mar 12, 2025 pm 04:50 PM

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

How do I use algorithms from the STL (sort, find, transform, etc.) efficiently?How do I use algorithms from the STL (sort, find, transform, etc.) efficiently?Mar 12, 2025 pm 04:52 PM

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

How does dynamic dispatch work in C   and how does it affect performance?How does dynamic dispatch work in C and how does it affect performance?Mar 17, 2025 pm 01:08 PM

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

How do I use ranges in C  20 for more expressive data manipulation?How do I use ranges in C 20 for more expressive data manipulation?Mar 17, 2025 pm 12:58 PM

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.

How do I use move semantics in C   to improve performance?How do I use move semantics in C to improve performance?Mar 18, 2025 pm 03:27 PM

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

How do I handle exceptions effectively in C  ?How do I handle exceptions effectively in C ?Mar 12, 2025 pm 04:56 PM

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

How do I use rvalue references effectively in C  ?How do I use rvalue references effectively in C ?Mar 18, 2025 pm 03:29 PM

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)

How does C  's memory management work, including new, delete, and smart pointers?How does C 's memory management work, including new, delete, and smart pointers?Mar 17, 2025 pm 01:04 PM

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

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)