What are Golang Template Engine Pipelines and How Do They Work?

Golang Template Engine Pipelines

In Go's template engine, pipelines offer a concise way to manipulate and process data within templates. By stringing together functional commands using the '|' pipeline separator, users can create sequences of operations that modify data values or control execution flow.

What is a Pipeline?

Pipelines serve as commands that alter or evaluate a piece of data, referred to as the result. These commands can take the form of function calls, method invocations, or simply argument evaluation. When multiple commands are chained, the result of each command becomes the argument for the next. The final result of the pipeline is the computed value.

Understanding the Dot ('.')

The dot (.) is a central concept in templates, representing a cursor that traverses the data structure passed to the template. It points to a specific value or part of the data structure. By using '.' followed by a field or method name, developers can access specific attributes of the object pointed to by the dot.

Example: Template Execution with Pipelines

Consider the following template:

{{range .Books}}

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