Change functions to properties

- Force PHP 8.4

src/Result.php

@@ -25,7 +25,7 @@ use InvalidArgumentException;
  * @template TOK The type of the OK result
  * @template TError The type of the error result
  */
-readonly class Result
+class Result
 {
     /** @var Option<TOK> The OK value for this result */
     private Option $okValue;
@@ -45,46 +45,24 @@ readonly class Result
         $this->errorValue = Option::of($errorValue);
     }
 
-    /**
-     * Get the value for an `OK` result
-     *
-     * @return TOK The OK value for this result
-     * @throws InvalidArgumentException If the result is an `Error` result
-     */
-    public function getOK(): mixed
-    {
-        return $this->okValue->get();
+    /** @var TOK The OK value (will throw if result is not OK) */
+    public mixed $ok {
+        get => $this->okValue->value;
     }
 
-    /**
-     * Get the value for an `Error` result
-     *
-     * @return TError The error value for this result
-     * @throws InvalidArgumentException If the result is an `OK` result
-     */
-    public function getError(): mixed
-    {
-        return $this->errorValue->get();
+    /** @var TError The error value (will throw if result is not Error) */
+    public mixed $error {
+        get => $this->errorValue->value;
     }
 
-    /**
-     * Is this result `OK`?
-     *
-     * @return bool True if the result is `OK`, false if it is `Error`
-     */
-    public function isOK(): bool
-    {
-        return $this->okValue->isSome();
+    /** @var bool True if the result is `OK`, false if it is `Error` */
+    public bool $isOK {
+        get => $this->okValue->isSome;
     }
 
-    /**
-     * Is this result `Error`?
-     *
-     * @return bool True if the result is `Error`, false if it is `OK`
-     */
-    public function isError(): bool
-    {
-        return $this->errorValue->isSome();
+    /** @var bool True if the result is `Error`, false if it is `OK` */
+    public bool $isError {
+        get => $this->errorValue->isSome;
     }
 
     /**
@@ -100,7 +78,7 @@ readonly class Result
      */
     public function bind(callable $f): Result
     {
-        return $this->isError() ? $this : $f($this->getOK());
+        return $this->isError ? $this : $f($this->ok);
     }
 
     /**
@@ -113,8 +91,8 @@ readonly class Result
     public function contains(mixed $value, bool $strict = true): bool
     {
         return match (true) {
-            $this->isError() => false,
-            default          => $this->okValue->contains($value, $strict),
+            $this->isError => false,
+            default        => $this->okValue->contains($value, $strict),
         };
     }
 
@@ -126,7 +104,7 @@ readonly class Result
      */
     public function exists(callable $f): bool
     {
-        return $this->isOK() ? $f($this->okValue->get()) : false;
+        return $this->isOK ? $f($this->ok) : false;
     }
 
     /**
@@ -138,7 +116,7 @@ readonly class Result
      */
     public function map(callable $f): self
     {
-        return $this->isOK() ? self::OK($f($this->getOK())) : $this;
+        return $this->isOK ? self::OK($f($this->ok)) : $this;
     }
 
     /**
@@ -150,7 +128,7 @@ readonly class Result
      */
     public function mapError(callable $f): self
     {
-        return $this->isError() ? self::Error($f($this->getError())) : $this;
+        return $this->isError ? self::Error($f($this->error)) : $this;
     }
 
     /**
@@ -160,8 +138,8 @@ readonly class Result
      */
     public function iter(callable $f): void
     {
-        if ($this->isOK()) {
-            $f($this->getOK());
+        if ($this->isOK) {
+            $f($this->ok);
         }
     }
 
@@ -182,7 +160,7 @@ readonly class Result
      */
     public function toOption(): Option
     {
-        return $this->isOK() ? Option::Some($this->getOK()) : Option::None();
+        return $this->isOK ? Option::Some($this->ok) : Option::None();
     }
 
     /**