Added CompositeLogger::append method.

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "mdlog"
 authors = ["Michal Douša <[email protected]>"]
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 
 [dependencies]

src/auto.rs

@@ -9,7 +9,9 @@ use std::io;
 ///
 /// Note that [`Logger`] trait does not specify how given message is logged nor
 /// where it should be logged to.
-pub trait Logger {
+///
+/// [`log`]: Logger::log
+pub trait Logger: Send + Sync {
     /// Method for logging a message.
     ///
     /// # Parameters

src/loggers/composite.rs

@@ -21,9 +21,27 @@ impl CompositeLogger {
 
     /// Creates a new [`CompositeLogger`] with given capacity of the underlying
     /// [`Vec`]. See [`Vec::with_capacity`] method for more information.
+    ///
+    /// # Parameters
+    ///
+    ///  -  `capacity`: capacity of the underlying [`Vec`]
     pub fn with_capacity(capacity: usize) -> Self {
         Self(Vec::with_capacity(capacity))
     }
+
+    pub fn add<L>(&mut self, logger: L)
+    where L: Logger {
+        self.0.push(logger)
+    }
+
+    /// Merges `self` with another instance of [`CompositeLogger`].
+    ///
+    /// # Parameters
+    ///
+    ///  -  `other`: the other instance of [`CompositeLogger`] to merge with
+    pub fn append(&mut self, mut other: Self) {
+        self.0.append(&mut other.0);
+    }
 }
 
 impl Logger for CompositeLogger {
@@ -37,7 +55,6 @@ impl Logger for CompositeLogger {
 
 impl Deref for CompositeLogger {
     type Target = LoggerVec;
-
     fn deref(&self) -> &LoggerVec {
         &self.0
     }