remove std

Cargo.toml

@@ -5,14 +5,12 @@ authors = ["Allister Isaiah Harvey <[email protected]>"]
 edition = "2021"
 
 [features]
-default = ["hashbrown"]
-std = []
-hashbrown = ["dep:hashbrown"]
+
 
 [dependencies]
 num = "0.4.0"
 rand = "0.8.5"
-hashbrown = { version = "0.14.0", optional = true }
+hashbrown = { version = "0.14.3" }
 
 
 [dev-dependencies]

src/dynamic_programming/memoize.rs

@@ -1,9 +1,6 @@
 use core::hash::Hash;
 
-#[cfg(not(feature = "std"))]
 use hashbrown::HashMap;
-#[cfg(feature = "std")]
-use std::collections::HashMap;
 
 /// Memoizes the result of a function to avoid redundant function calls.
 ///
@@ -20,10 +17,7 @@ use std::collections::HashMap;
 /// # Example
 ///
 /// ```
-/// #[cfg(not(feature = "std"))]
 /// use hashbrown::HashMap;
-/// #[cfg(feature = "std")]
-/// use std::collections::HashMap;
 /// use algorithms::dynamic_programming::memoize;
 ///
 /// fn fibonacci(cache: &mut HashMap<u32, u64>, n: u32) -> u64 {

src/lib.rs

@@ -27,9 +27,6 @@
 #![feature(cfg_match, decl_macro)]
 #![no_std]
 
-#[cfg(feature = "std")]
-extern crate std;
-
 extern crate alloc;
 
 pub mod dynamic_programming;
@@ -42,3 +39,5 @@ pub mod higher_order_functions;
 #[doc = include_str!("sorts/README.md")]
 pub mod sorts;
 pub mod strings;
+
+pub use hashbrown;

src/macros/hashmap.rs

@@ -23,10 +23,7 @@ pub macro hashmap {
     ($($key:expr => $value:expr,)+) => { hashmap!($($key => $value),+) },
     ($($key:expr => $value:expr),*) => {
         {
-            #[cfg(not(feature = "std"))]
-            use hashbrown::HashMap;
-            #[cfg(feature = "std")]
-            use std::collections::HashMap;
+            use $crate::hashbrown::HashMap;
 
             let capacity = hashmap!(@count $($key),*);
             let mut map = HashMap::with_capacity(capacity);

src/math/fibonacci.rs

@@ -2,10 +2,7 @@
 //!
 //! [Wikipedia](https://en.wikipedia.org/wiki/Fibonacci_number)
 
-#[cfg(not(feature = "std"))]
 use hashbrown::HashMap;
-#[cfg(feature = "std")]
-use std::collections::HashMap;
 
 use crate::dynamic_programming::memoize;
 

src/strings/search/word_occurrences.rs

@@ -1,7 +1,4 @@
-#[cfg(not(feature = "std"))]
 use hashbrown::HashMap;
-#[cfg(feature = "std")]
-use std::collections::HashMap;
 
 /// Create a map containing count of each word
 ///