How Can I Dynamically Access Variable Names in a Go Template System?

How to Access Variable Names Dynamically Using Reflection

Question:

In a custom templating system, how can we dynamically retrieve the names of variables stored in a slice? Specifically, we aim to replace placeholders in a template (e.g., {{onevar}}) with the corresponding variable values.

Answer:

Accessing variable names as they appear in the source code is not possible when working with their values stored in a slice. This is because the slice contains the values themselves, not references to the original variables or their names.

Example Attempts:

You mentioned attempting to use reflection to achieve this, but there seems to be a misunderstanding. Reflection in Go provides information about types and values at runtime but does not have the capability to retrieve variable names from their values.

Solution:

To achieve your desired functionality, it is recommended to use a map instead of a slice. A map associates keys with values, where the keys can be used as identifiers for the values. By storing the variable names as keys and the values in a corresponding map, you can easily replace placeholders with the actual variable values.

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