Method RegisterHelper

Namespace: LMKit.TextGeneration.Prompts

Assembly: LM-Kit.NET.dll

RegisterHelper(string, PromptTemplateHelper)

Registers a custom helper function callable from the template.

public PromptTemplateContext RegisterHelper(string name, PromptTemplateHelper handler)

Parameters

name string: The helper name used in template expressions (e.g., "date").
handler PromptTemplateHelper: The function to execute when the helper is invoked.

Returns

PromptTemplateContext: This context instance.

Examples

var context = new PromptTemplateContext();
context.RegisterHelper("uppercase", args =>
    args.Length > 0 ? args[0]?.ToString().ToUpper() : "");

var template = PromptTemplate.Parse("{{uppercase name}}");
string result = template.Render(context.Set("name", "alice"));
// "ALICE"

Exceptions

ArgumentNullException: Thrown when name or handler is null.