added is_ok and is_err

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### New Functions 🚀
 
+- `is_err`
+- `is_ok`
 - `is_none`
 - `is_some`
 - `use_raf_fn`

docs/book/src/SUMMARY.md

@@ -63,7 +63,9 @@
 
 # Utilities
 
+- [is_err](utilities/is_err.md)
 - [is_none](utilities/is_none.md)
+- [is_ok](utilities/is_ok.md)
 - [is_some](utilities/is_some.md)
 - [use_cycle_list](utilities/use_cycle_list.md)
 - [use_debounce_fn](utilities/use_debounce_fn.md)

docs/book/src/utilities/is_err.md

@@ -0,0 +1,3 @@
+# is_err
+
+<!-- cmdrun python3 ../extract_doc_comment.py is_err  -->

docs/book/src/utilities/is_ok.md

@@ -0,0 +1,3 @@
+# is_ok
+
+<!-- cmdrun python3 ../extract_doc_comment.py is_ok  -->

examples/Cargo.toml

@@ -2,7 +2,9 @@
 resolver = "2"
 
 members = [
+    "is_err",
     "is_none",
+    "is_ok",
     "is_some",
     "on_click_outside",
     "use_abs",

src/is_err.rs

@@ -0,0 +1,27 @@
+use crate::utils::use_derive_signal;
+use leptos::*;
+
+use_derive_signal!(
+    /// Reactive `Result::is_err()`.
+    ///
+    /// ## Usage
+    ///
+    /// ```
+    /// # use leptos::*;
+    /// # use leptos_use::is_err;
+    /// #
+    /// # #[component]
+    /// # fn Demo(cx: Scope) -> impl IntoView {
+    /// let (example, set_example) = create_signal(
+    ///     cx,
+    ///     if js_sys::Math::random() < 0.5 { Ok("Example") } else { Err(()) }
+    /// );
+    ///
+    /// let is_error = is_err(cx, example);
+    /// #
+    /// # view! { cx, }
+    /// # }
+    /// ```
+    is_err<Result<T, ()>, T: 'static> -> bool
+    |value| value.is_err()
+);

src/is_ok.rs

@@ -0,0 +1,27 @@
+use crate::utils::use_derive_signal;
+use leptos::*;
+
+use_derive_signal!(
+    /// Reactive `Result::is_ok()`.
+    ///
+    /// ## Usage
+    ///
+    /// ```
+    /// # use leptos::*;
+    /// # use leptos_use::is_ok;
+    /// #
+    /// # #[component]
+    /// # fn Demo(cx: Scope) -> impl IntoView {
+    /// let (example, set_example) = create_signal(
+    ///     cx,
+    ///     if js_sys::Math::random() < 0.5 { Ok("Example") } else { Err(()) }
+    /// );
+    ///
+    /// let is_ok = is_ok(cx, example);
+    /// #
+    /// # view! { cx, }
+    /// # }
+    /// ```
+    is_ok<Result<T, ()>, T: 'static> -> bool
+    |value| value.is_ok()
+);

src/lib.rs

@@ -21,6 +21,8 @@ cfg_if! { if #[cfg(web_sys_unstable_apis)] {
 }}
 
 mod on_click_outside;
+mod is_err;
+mod is_ok;
 mod is_none;
 mod is_some;
 mod use_active_element;
@@ -58,6 +60,8 @@ mod watch_throttled;
 mod whenever;
 
 pub use on_click_outside::*;
+pub use is_err::*;
+pub use is_ok::*;
 pub use is_none::*;
 pub use is_some::*;
 pub use use_active_element::*;