diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce0981c0..5d7c0965 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,12 @@ Bug fixes
 * Complex indexing/dotting chains now parse correctly, for example: `a[b][c[d]].e`
 * `map` and `filter` for arrays are marked `pure`. Warnings are added to the documentation of pure array methods that take `this` closures.
 * Syntax such as `foo.bar::baz` no longer panics, but returns a proper parse error.
+* `x += y` where `x` and `y` are `char` now works correctly.
+
+Enhancements
+------------
+
+* The functions `min` and `max` are added for numbers.
 
 
 Version 1.12.0
diff --git a/src/api/formatting.rs b/src/api/formatting.rs
index 9a342d10..07441f49 100644
--- a/src/api/formatting.rs
+++ b/src/api/formatting.rs
@@ -3,8 +3,8 @@ use crate::packages::iter_basic::{BitRange, CharsStream, StepRange};
 use crate::parser::{ParseResult, ParseState};
 use crate::types::StringsInterner;
 use crate::{
-    Engine, ExclusiveRange, FnPtr, ImmutableString, InclusiveRange, OptimizationLevel, Position,
-    RhaiError, SmartString, ERR,
+    Engine, ExclusiveRange, FnPtr, ImmutableString, InclusiveRange, Position, RhaiError,
+    SmartString, ERR,
 };
 use std::any::type_name;
 #[cfg(feature = "no_std")]
@@ -288,7 +288,7 @@ impl Engine {
             stream.peekable(),
             &mut state,
             #[cfg(not(feature = "no_optimize"))]
-            OptimizationLevel::None,
+            crate::OptimizationLevel::None,
             #[cfg(feature = "no_optimize")]
             (),
         )?;
diff --git a/src/bin/rhai-run.rs b/src/bin/rhai-run.rs
index 470bf42c..4d59fc65 100644
--- a/src/bin/rhai-run.rs
+++ b/src/bin/rhai-run.rs
@@ -51,6 +51,7 @@ fn main() {
         };
 
         // Initialize scripting engine
+        #[allow(unused_mut)]
         let mut engine = Engine::new();
 
         #[cfg(not(feature = "no_optimize"))]
diff --git a/src/engine.rs b/src/engine.rs
index 3caa8183..3e07bda9 100644
--- a/src/engine.rs
+++ b/src/engine.rs
@@ -98,7 +98,7 @@ pub struct Engine {
     #[cfg(not(feature = "no_module"))]
     pub(crate) module_resolver: Box<dyn crate::ModuleResolver>,
 
-    /// An empty [`ImmutableString`] for cloning purposes.
+    /// Strings interner.
     pub(crate) interned_strings: Locked<StringsInterner>,
 
     /// A set of symbols to disable.
diff --git a/src/eval/chaining.rs b/src/eval/chaining.rs
index b7f12554..6833e923 100644
--- a/src/eval/chaining.rs
+++ b/src/eval/chaining.rs
@@ -543,6 +543,7 @@ impl Engine {
         let op_pos = parent.position();
 
         #[cfg(feature = "debugging")]
+        #[allow(unused_mut)]
         let mut this_ptr = this_ptr;
 
         match ChainType::from(parent) {
diff --git a/src/func/builtin.rs b/src/func/builtin.rs
index e23f45ae..592297af 100644
--- a/src/func/builtin.rs
+++ b/src/func/builtin.rs
@@ -10,9 +10,9 @@ use crate::{
     Dynamic, ExclusiveRange, ImmutableString, InclusiveRange, NativeCallContext, RhaiResult,
     SmartString, INT,
 };
+use std::any::TypeId;
 #[cfg(feature = "no_std")]
 use std::prelude::v1::*;
-use std::{any::TypeId, fmt::Write};
 
 #[cfg(not(feature = "no_float"))]
 use crate::FLOAT;
@@ -753,7 +753,7 @@ pub fn get_builtin_op_assignment_fn(op: Token, x: &Dynamic, y: &Dynamic) -> Opti
                         let x = &mut *args[0].write_lock::<Dynamic>().unwrap();
 
                         let mut buf = SmartString::new_const();
-                        write!(&mut buf, "{y}").unwrap();
+                        buf.push(x.as_char().unwrap());
                         buf.push(y);
 
                         Ok((*x = buf.into()).into())
diff --git a/src/func/hashing.rs b/src/func/hashing.rs
index bb5a0c2a..cffe5d9b 100644
--- a/src/func/hashing.rs
+++ b/src/func/hashing.rs
@@ -51,11 +51,7 @@ impl Hasher for StraightHasher {
     }
     #[inline(always)]
     fn write_u64(&mut self, i: u64) {
-        if i == 0 {
-            self.0 = ALT_ZERO_HASH;
-        } else {
-            self.0 = i;
-        }
+        self.0 = i;
     }
 }
 
@@ -69,7 +65,7 @@ impl BuildHasher for StraightHasherBuilder {
     #[inline(always)]
     #[must_use]
     fn build_hasher(&self) -> Self::Hasher {
-        StraightHasher(ALT_ZERO_HASH)
+        StraightHasher(0)
     }
 }
 
@@ -99,16 +95,19 @@ pub fn get_hasher() -> ahash::AHasher {
 /// The first module name is skipped.  Hashing starts from the _second_ module in the chain.
 #[inline]
 #[must_use]
-pub fn calc_var_hash<'a>(
-    modules: impl IntoIterator<Item = &'a str, IntoIter = impl ExactSizeIterator<Item = &'a str>>,
-    var_name: &str,
-) -> u64 {
+pub fn calc_var_hash<'a>(namespace: impl IntoIterator<Item = &'a str>, var_name: &str) -> u64 {
     let s = &mut get_hasher();
+    let mut count = 0;
 
     // We always skip the first module
-    let iter = modules.into_iter();
-    iter.len().hash(s);
-    iter.skip(1).for_each(|m| m.hash(s));
+    namespace.into_iter().for_each(|m| {
+        // We always skip the first module
+        if count > 0 {
+            m.hash(s);
+        }
+        count += 1;
+    });
+    count.hash(s);
     var_name.hash(s);
 
     match s.finish() {
@@ -135,16 +134,21 @@ pub fn calc_var_hash<'a>(
 #[inline]
 #[must_use]
 pub fn calc_fn_hash<'a>(
-    namespace: impl IntoIterator<Item = &'a str, IntoIter = impl ExactSizeIterator<Item = &'a str>>,
+    namespace: impl IntoIterator<Item = &'a str>,
     fn_name: &str,
     num: usize,
 ) -> u64 {
     let s = &mut get_hasher();
+    let mut count = 0;
 
-    // We always skip the first module
-    let iter = namespace.into_iter();
-    iter.len().hash(s);
-    iter.skip(1).for_each(|m| m.hash(s));
+    namespace.into_iter().for_each(|m| {
+        // We always skip the first module
+        if count > 0 {
+            m.hash(s);
+        }
+        count += 1;
+    });
+    count.hash(s);
     fn_name.hash(s);
     num.hash(s);
 
@@ -163,17 +167,15 @@ pub fn calc_fn_hash<'a>(
 /// If the hash happens to be zero, it is mapped to `ALT_ZERO_HASH`.
 #[inline]
 #[must_use]
-pub fn calc_fn_hash_full(
-    base: u64,
-    params: impl IntoIterator<Item = TypeId, IntoIter = impl ExactSizeIterator<Item = TypeId>>,
-) -> u64 {
+pub fn calc_fn_hash_full(base: u64, params: impl IntoIterator<Item = TypeId>) -> u64 {
     let s = &mut get_hasher();
     base.hash(s);
-    let iter = params.into_iter();
-    iter.len().hash(s);
-    iter.for_each(|t| {
+    let mut count = 0;
+    params.into_iter().for_each(|t| {
         t.hash(s);
+        count += 1;
     });
+    count.hash(s);
 
     match s.finish() {
         0 => ALT_ZERO_HASH,
diff --git a/src/module/mod.rs b/src/module/mod.rs
index f0f3716a..e299b2a5 100644
--- a/src/module/mod.rs
+++ b/src/module/mod.rs
@@ -462,7 +462,8 @@ impl Module {
         self.dynamic_functions_filter = None;
         self.type_iterators = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
     }
 
     /// Map a custom type to a friendly display name.
@@ -746,7 +747,8 @@ impl Module {
                     func: fn_def.into(),
                 },
             );
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
         hash_script
     }
 
@@ -785,7 +787,8 @@ impl Module {
         self.all_functions = None;
         self.all_variables = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
 
         self.modules.get_or_insert_with(Default::default)
     }
@@ -851,7 +854,8 @@ impl Module {
         self.modules
             .get_or_insert_with(Default::default)
             .insert(name.into(), sub_module.into());
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
         self
     }
 
@@ -962,7 +966,8 @@ impl Module {
     pub fn update_fn_namespace(&mut self, hash_fn: u64, namespace: FnNamespace) -> &mut Self {
         if let Some(f) = self.functions.as_mut().and_then(|m| m.get_mut(&hash_fn)) {
             f.metadata.namespace = namespace;
-            self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+            self.flags
+                .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
         }
         self
     }
@@ -1078,7 +1083,8 @@ impl Module {
                 },
             );
 
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
 
         hash_fn
     }
@@ -1676,7 +1682,8 @@ impl Module {
         self.all_functions = None;
         self.all_variables = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
 
         #[cfg(feature = "metadata")]
         if !other.doc.as_deref().map_or(true, SmartString::is_empty) {
@@ -1732,7 +1739,8 @@ impl Module {
         self.all_functions = None;
         self.all_variables = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
 
         #[cfg(feature = "metadata")]
         if !other.doc.as_deref().map_or(true, SmartString::is_empty) {
@@ -1797,7 +1805,8 @@ impl Module {
         self.all_functions = None;
         self.all_variables = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
 
         #[cfg(feature = "metadata")]
         if !other.doc.as_deref().map_or(true, SmartString::is_empty) {
@@ -1880,7 +1889,8 @@ impl Module {
         self.all_functions = None;
         self.all_variables = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
 
         #[cfg(feature = "metadata")]
         if !other.doc.as_deref().map_or(true, SmartString::is_empty) {
@@ -1923,7 +1933,8 @@ impl Module {
         self.all_functions = None;
         self.all_variables = None;
         self.all_type_iterators = None;
-        self.flags &= !ModuleFlags::INDEXED & !ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
+        self.flags
+            .remove(ModuleFlags::INDEXED | ModuleFlags::INDEXED_GLOBAL_FUNCTIONS);
         self
     }
 
@@ -2306,7 +2317,7 @@ impl Module {
 
             path.push("");
 
-            let r = index_module(
+            let has_global_functions = index_module(
                 self,
                 &mut path,
                 &mut variables,
@@ -2314,9 +2325,8 @@ impl Module {
                 &mut type_iterators,
             );
 
-            if r {
-                self.flags |= ModuleFlags::INDEXED_GLOBAL_FUNCTIONS;
-            }
+            self.flags
+                .set(ModuleFlags::INDEXED_GLOBAL_FUNCTIONS, has_global_functions);
 
             self.all_variables = if variables.is_empty() {
                 None
diff --git a/src/optimizer.rs b/src/optimizer.rs
index ea9c1fd7..67211427 100644
--- a/src/optimizer.rs
+++ b/src/optimizer.rs
@@ -229,7 +229,7 @@ fn optimize_stmt_block(
         });
 
         // Optimize each statement in the block
-        for stmt in &mut statements {
+        statements.iter_mut().for_each(|stmt| {
             match stmt {
                 Stmt::Var(x, options, ..) => {
                     if options.contains(ASTFlags::CONSTANT) {
@@ -252,7 +252,7 @@ fn optimize_stmt_block(
                 // Optimize the statement
                 _ => optimize_stmt(stmt, state, preserve_result),
             }
-        }
+        });
 
         // Remove all pure statements except the last one
         let mut index = 0;
@@ -626,11 +626,11 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
                         state.set_dirty();
                     }
 
-                    for r in &*ranges {
+                    ranges.iter().for_each(|r| {
                         let b = &mut expressions[r.index()];
                         optimize_expr(&mut b.condition, state, false);
                         optimize_expr(&mut b.expr, state, false);
-                    }
+                    });
                     return;
                 }
             }
@@ -663,7 +663,7 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
             optimize_expr(match_expr, state, false);
 
             // Optimize blocks
-            for b in expressions.as_mut() {
+            expressions.iter_mut().for_each(|b| {
                 optimize_expr(&mut b.condition, state, false);
                 optimize_expr(&mut b.expr, state, false);
 
@@ -671,7 +671,7 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
                     b.expr = Expr::Unit(b.expr.position());
                     state.set_dirty();
                 }
-            }
+            });
 
             // Remove false cases
             cases.retain(|_, list| {
@@ -718,12 +718,12 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
             }
 
             // Remove unused block statements
-            for index in 0..expressions.len() {
+            (0..expressions.len()).into_iter().for_each(|index| {
                 if *def_case == Some(index)
                     || cases.values().flat_map(|c| c.iter()).any(|&n| n == index)
                     || ranges.iter().any(|r| r.index() == index)
                 {
-                    continue;
+                    return;
                 }
 
                 let b = &mut expressions[index];
@@ -732,7 +732,7 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
                     b.expr = Expr::Unit(b.expr.position());
                     state.set_dirty();
                 }
-            }
+            });
         }
 
         // while false { block } -> Noop
@@ -1159,8 +1159,7 @@ fn optimize_expr(expr: &mut Expr, state: &mut OptimizerState, _chaining: bool) {
             x.args.iter_mut().for_each(|a| optimize_expr(a, state, false));
 
             // Move constant arguments
-            for arg in &mut x.args {
-                match arg {
+            x.args.iter_mut().for_each(|arg| match arg {
                     Expr::DynamicConstant(..) | Expr::Unit(..)
                     | Expr::StringConstant(..) | Expr::CharConstant(..)
                     | Expr::BoolConstant(..) | Expr::IntegerConstant(..) => (),
@@ -1172,8 +1171,7 @@ fn optimize_expr(expr: &mut Expr, state: &mut OptimizerState, _chaining: bool) {
                         state.set_dirty();
                         *arg = Expr::DynamicConstant(value.into(), arg.start_position());
                     },
-                }
-            }
+                });
         }
 
         // Eagerly call functions
@@ -1209,7 +1207,7 @@ fn optimize_expr(expr: &mut Expr, state: &mut OptimizerState, _chaining: bool) {
         }
 
         // id(args ..) or xxx.id(args ..) -> optimize function call arguments
-        Expr::FnCall(x, ..) | Expr::MethodCall(x, ..) => for arg in &mut x.args {
+        Expr::FnCall(x, ..) | Expr::MethodCall(x, ..) => x.args.iter_mut().for_each(|arg| {
             optimize_expr(arg, state, false);
 
             // Move constant arguments
@@ -1226,7 +1224,7 @@ fn optimize_expr(expr: &mut Expr, state: &mut OptimizerState, _chaining: bool) {
                     *arg = Expr::DynamicConstant(value.into(), arg.start_position());
                 },
             }
-        },
+        }),
 
         // constant-name
         #[cfg(not(feature = "no_module"))]
@@ -1304,20 +1302,25 @@ impl Engine {
         let mut state = OptimizerState::new(self, lib, optimization_level);
 
         // Add constants from global modules
-        for (name, value) in self.global_modules.iter().rev().flat_map(|m| m.iter_var()) {
-            state.push_var(name, AccessMode::ReadOnly, Some(value.clone()));
-        }
+        self.global_modules
+            .iter()
+            .rev()
+            .flat_map(|m| m.iter_var())
+            .for_each(|(name, value)| {
+                state.push_var(name, AccessMode::ReadOnly, Some(value.clone()))
+            });
 
         // Add constants and variables from the scope
-        if let Some(scope) = scope {
-            for (name, constant, value) in scope.iter() {
+        scope
+            .into_iter()
+            .flat_map(Scope::iter)
+            .for_each(|(name, constant, value)| {
                 if constant {
                     state.push_var(name, AccessMode::ReadOnly, Some(value));
                 } else {
                     state.push_var(name, AccessMode::ReadWrite, None);
                 }
-            }
-        }
+            });
 
         optimize_stmt_block(statements, &mut state, true, false, true)
     }
@@ -1339,15 +1342,16 @@ impl Engine {
             let mut module = crate::Module::new();
 
             if optimization_level == OptimizationLevel::None {
-                for fn_def in functions {
+                functions.into_iter().for_each(|fn_def| {
                     module.set_script_fn(fn_def);
-                }
+                });
             } else {
                 // We only need the script library's signatures for optimization purposes
                 let mut lib2 = crate::Module::new();
 
-                for fn_def in &functions {
-                    lib2.set_script_fn(crate::ast::ScriptFnDef {
+                functions
+                    .iter()
+                    .map(|fn_def| crate::ast::ScriptFnDef {
                         name: fn_def.name.clone(),
                         access: fn_def.access,
                         body: crate::ast::StmtBlock::NONE,
@@ -1355,12 +1359,14 @@ impl Engine {
                         #[cfg(not(feature = "no_function"))]
                         #[cfg(feature = "metadata")]
                         comments: Box::default(),
+                    })
+                    .for_each(|script_def| {
+                        lib2.set_script_fn(script_def);
                     });
-                }
 
                 let lib2 = &[lib2.into()];
 
-                for fn_def in functions {
+                functions.into_iter().for_each(|fn_def| {
                     let mut fn_def = crate::func::shared_take_or_clone(fn_def);
 
                     // Optimize the function body
@@ -1369,7 +1375,7 @@ impl Engine {
                     *fn_def.body = self.optimize_top_level(body, scope, lib2, optimization_level);
 
                     module.set_script_fn(fn_def);
-                }
+                });
             }
 
             module.into()
diff --git a/src/packages/logic.rs b/src/packages/logic.rs
index 19e2fdde..e163eff6 100644
--- a/src/packages/logic.rs
+++ b/src/packages/logic.rs
@@ -21,6 +21,8 @@ macro_rules! gen_cmp_functions {
                 #[rhai_fn(name = ">=")] pub fn gte(x: $arg_type, y: $arg_type) -> bool { x >= y }
                 #[rhai_fn(name = "==")] pub fn eq(x: $arg_type, y: $arg_type) -> bool { x == y }
                 #[rhai_fn(name = "!=")] pub fn ne(x: $arg_type, y: $arg_type) -> bool { x != y }
+                pub fn max(x: $arg_type, y: $arg_type) -> $arg_type { if x >= y { x } else { y } }
+                pub fn min(x: $arg_type, y: $arg_type) -> $arg_type { if x <= y { x } else { y } }
             }
         })* }
     };
@@ -53,15 +55,23 @@ def_package! {
 
         #[cfg(not(feature = "no_float"))]
         {
-            #[cfg(not(feature = "f32_float"))]
-            reg_functions!(lib += float; f32);
-            combine_with_exported_module!(lib, "f32", f32_functions);
+            combine_with_exported_module!(lib, "float", float_functions);
 
+            #[cfg(not(feature = "f32_float"))]
+            {
+                reg_functions!(lib += float; f32);
+                combine_with_exported_module!(lib, "f32", f32_functions);
+            }
             #[cfg(feature = "f32_float")]
-            reg_functions!(lib += float; f64);
-            combine_with_exported_module!(lib, "f64", f64_functions);
+            {
+                reg_functions!(lib += float; f64);
+                combine_with_exported_module!(lib, "f64", f64_functions);
+            }
         }
 
+        #[cfg(feature = "decimal")]
+        combine_with_exported_module!(lib, "decimal", decimal_functions);
+
         combine_with_exported_module!(lib, "logic", logic_functions);
     }
 }
@@ -95,9 +105,90 @@ mod logic_functions {
 #[cfg(not(feature = "no_float"))]
 #[allow(clippy::cast_precision_loss)]
 #[export_module]
-mod f32_functions {
+mod float_functions {
     use crate::INT;
 
+    #[rhai_fn(name = "max")]
+    pub fn max_if_32(x: INT, y: f32) -> f32 {
+        let (x, y) = (x as f32, y as f32);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "max")]
+    pub fn max_fi_32(x: f32, y: INT) -> f32 {
+        let (x, y) = (x as f32, y as f32);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_if_32(x: INT, y: f32) -> f32 {
+        let (x, y) = (x as f32, y as f32);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_fi_32(x: f32, y: INT) -> f32 {
+        let (x, y) = (x as f32, y as f32);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "max")]
+    pub fn max_if_64(x: INT, y: f64) -> f64 {
+        let (x, y) = (x as f64, y as f64);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "max")]
+    pub fn max_fi_64(x: f64, y: INT) -> f64 {
+        let (x, y) = (x as f64, y as f64);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_if_64(x: INT, y: f64) -> f64 {
+        let (x, y) = (x as f64, y as f64);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_fi_64(x: f64, y: INT) -> f64 {
+        let (x, y) = (x as f64, y as f64);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+}
+
+#[cfg(not(feature = "no_float"))]
+#[cfg(not(feature = "f32_float"))]
+#[allow(clippy::cast_precision_loss)]
+#[export_module]
+mod f32_functions {
+    use crate::{FLOAT, INT};
+
     #[rhai_fn(name = "==")]
     pub fn eq_if(x: INT, y: f32) -> bool {
         (x as f32) == (y as f32)
@@ -146,13 +237,51 @@ mod f32_functions {
     pub fn lte_fi(x: f32, y: INT) -> bool {
         (x as f32) <= (y as f32)
     }
+
+    #[rhai_fn(name = "max")]
+    pub fn max_64_32(x: FLOAT, y: f32) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "max")]
+    pub fn max_32_64(x: f32, y: FLOAT) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_64_32(x: FLOAT, y: f32) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_32_64(x: f32, y: FLOAT) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
 }
 
 #[cfg(not(feature = "no_float"))]
+#[cfg(feature = "f32_float")]
 #[allow(clippy::cast_precision_loss)]
 #[export_module]
 mod f64_functions {
-    use crate::INT;
+    use crate::{FLOAT, INT};
 
     #[rhai_fn(name = "==")]
     pub fn eq_if(x: INT, y: f64) -> bool {
@@ -202,4 +331,85 @@ mod f64_functions {
     pub fn lte_fi(x: f64, y: INT) -> bool {
         (x as f64) <= (y as f64)
     }
+
+    #[rhai_fn(name = "max")]
+    pub fn max_32_64(x: FLOAT, y: f64) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "max")]
+    pub fn max_64_32(x: f64, y: FLOAT) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_32_64(x: FLOAT, y: f64) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_64_32(x: f64, y: FLOAT) -> FLOAT {
+        let (x, y) = (x as FLOAT, y as FLOAT);
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+}
+
+#[cfg(feature = "decimal")]
+#[export_module]
+mod decimal_functions {
+    use crate::INT;
+    use rust_decimal::Decimal;
+
+    #[rhai_fn(name = "max")]
+    pub fn max_id(x: INT, y: Decimal) -> Decimal {
+        let x = x.into();
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "max")]
+    pub fn max_di(x: Decimal, y: INT) -> Decimal {
+        let y = y.into();
+        if x >= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_id(x: INT, y: Decimal) -> Decimal {
+        let x = x.into();
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
+    #[rhai_fn(name = "min")]
+    pub fn min_di(x: Decimal, y: INT) -> Decimal {
+        let y = y.into();
+        if x <= y {
+            x
+        } else {
+            y
+        }
+    }
 }
diff --git a/src/parser.rs b/src/parser.rs
index 590d97f3..9051b65d 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1244,14 +1244,14 @@ impl Engine {
                             if !has_condition && ranges.is_empty() && r.len() <= SMALL_SWITCH_RANGE
                             {
                                 // Unroll small range
-                                for n in r {
+                                r.into_iter().for_each(|n| {
                                     let hasher = &mut get_hasher();
                                     Dynamic::from_int(n).hash(hasher);
                                     cases
                                         .entry(hasher.finish())
                                         .and_modify(|cases| cases.push(index))
                                         .or_insert_with(|| [index].into());
-                                }
+                                });
                             } else {
                                 // Other range
                                 r.set_index(index);
@@ -2769,7 +2769,7 @@ impl Engine {
         };
 
         if !orig_breakable {
-            settings.flags &= !ParseSettingFlags::BREAKABLE;
+            settings.flags.remove(ParseSettingFlags::BREAKABLE);
         }
 
         ensure_not_statement_expr(input, "a boolean")?;
@@ -3146,7 +3146,7 @@ impl Engine {
             }
 
             // Parse statements inside the block
-            settings.flags &= !ParseSettingFlags::GLOBAL_LEVEL;
+            settings.flags.remove(ParseSettingFlags::GLOBAL_LEVEL);
 
             let stmt = self.parse_stmt(input, state, lib, settings)?;
 
@@ -3983,9 +3983,9 @@ impl Engine {
         {
             let mut m = crate::Module::new();
 
-            for fn_def in _lib {
+            _lib.into_iter().for_each(|fn_def| {
                 m.set_script_fn(fn_def);
-            }
+            });
 
             return Ok(AST::new(statements, m));
         }
diff --git a/src/types/fn_ptr.rs b/src/types/fn_ptr.rs
index 155eaa27..b73246a7 100644
--- a/src/types/fn_ptr.rs
+++ b/src/types/fn_ptr.rs
@@ -71,6 +71,7 @@ impl FnPtr {
     /// Create a new function pointer without checking its parameters.
     #[inline(always)]
     #[must_use]
+    #[allow(dead_code)]
     pub(crate) fn new_unchecked(
         name: impl Into<ImmutableString>,
         curry: StaticVec<Dynamic>,