Question 1

Is go-linq slower than native Go loops?

Accepted Answer

Yes, especially with generic T-suffix methods that use reflection and are 5x-10x slower. For performance-critical code, native Go loops are faster and more efficient, but go-linq excels in readability for complex transformations.

Question 2

How to use go-linq with custom struct types?

Accepted Answer

Use the FromSlice constructor for slices of structs, then chain methods like WhereT and SelectT for type-safe operations without manual type assertions. This avoids any interfaces but incurs reflection overhead.

Question 3

go-linq vs other Go query libraries like gorp or sqlx?

Accepted Answer

go-linq is for in-memory data manipulation, not database queries. Compared to libraries like gorp (ORM) or sqlx (SQL utilities), go-linq focuses on LINQ-style operations on collections, offering a different abstraction layer.

Question 4

Does go-linq support concurrency with channels?

Accepted Answer

Yes, it supports channels via FromChannel and FromChannelWithContext constructors, allowing lazy evaluation and querying over streaming data. However, performance might lag behind direct channel operations in Go.

Question 5

How to handle errors in go-linq queries?

Accepted Answer

The library methods do not return errors by design, simplifying chaining. For error-prone operations, you must handle errors within the predicate or selector functions, which can make error propagation less straightforward.

Question 6

What are the breaking changes in go-linq v4?

Accepted Answer

v4.0.0 migrated to Go's standard iterator pattern, replacing old iteration methods with an Iterate field, and added typed constructors while removing FromChannelT. This requires updating iteration code and constructor usage.

go-linq

What is go-linq?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions