From 48b45ba4391ed377ce83c31ce8e314283e011c0c Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sun, 26 Oct 2025 12:01:54 -0700
Subject: [PATCH] we have c++20

---
 esphome/core/automation.h | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/esphome/core/automation.h b/esphome/core/automation.h
index eb8c9316ba4..82dce303d28 100644
--- a/esphome/core/automation.h
+++ b/esphome/core/automation.h
@@ -27,20 +27,21 @@ template<typename T, typename... X> class TemplatableValue {
  public:
   TemplatableValue() : type_(NONE) {}
 
-  template<typename F, enable_if_t<!is_invocable<F, X...>::value, int> = 0> TemplatableValue(F value) : type_(VALUE) {
+  template<typename F>
+  requires(!std::invocable<F, X...>) TemplatableValue(F value) : type_(VALUE) {
     new (&this->value_) T(std::move(value));
   }
 
   // For stateless lambdas (convertible to function pointer): use function pointer
-  template<typename F, enable_if_t<is_invocable<F, X...>::value && std::is_convertible<F, T (*)(X...)>::value, int> = 0>
-  TemplatableValue(F f) : type_(STATELESS_LAMBDA) {
+  template<typename F>
+  requires std::invocable<F, X...> && std::convertible_to<F, T (*)(X...)> TemplatableValue(F f)
+      : type_(STATELESS_LAMBDA) {
     this->stateless_f_ = f;  // Implicit conversion to function pointer
   }
 
   // For stateful lambdas (not convertible to function pointer): use std::function
-  template<typename F,
-           enable_if_t<is_invocable<F, X...>::value && !std::is_convertible<F, T (*)(X...)>::value, int> = 0>
-  TemplatableValue(F f) : type_(LAMBDA) {
+  template<typename F>
+  requires std::invocable<F, X...> &&(!std::convertible_to<F, T (*)(X...)>) TemplatableValue(F f) : type_(LAMBDA) {
     this->f_ = new std::function<T(X...)>(std::move(f));
   }