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slides/pages/messages/11.md

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+---
+layout: default
+---
+
+# Partial Templates
+
+<div class="mt-8 text-sm">
+
+<v-click>
+
+<div class="mb-6">
+
+**Partial**: Pre-rellenar algunas variables, completar otras después
+
+</div>
+
+</v-click>
+
+<v-click>
+
+```typescript
+import { ChatPromptTemplate } from "@langchain/core/prompts";
+
+const template = ChatPromptTemplate.fromMessages([
+  ["system", "Eres un experto en {topic} que habla {language}"],
+  ["human", "{question}"]
+]);
+
+// Pre-configurar topic y language
+const spanishJSTemplate = await template.partial({
+  topic: "JavaScript",
+  language: "español"
+});
+
+// Ahora solo necesitas la pregunta
+const response = await model.invoke(
+  await spanishJSTemplate.invoke({ question: "¿Qué es async/await?" })
+);
+```
+
+</v-click>
+
+</div>