small update

Cargo.toml

@@ -1,9 +1,12 @@
 [package]
 name = "smallmap"
+description = "Small byte-sized generic key-value map type"
+keywords = ["map", "table", "small", "key", "value"]
 version = "0.1.0"
 authors = ["Avril <flanchan@cumallover.me>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
+
+[build-dependencies]
+rustc_version = "0.2"

README.md

@@ -1,9 +1,11 @@
 # smallmap
-A small byte sized table map.
+A small byte sized table map. (Currently *requires* nightly).
 
-Designed for instances where you want a map with small keys (e.g. primitive).
+Designed for instances where you want a small map with relatively trivial keys (e.g. primitive type).
 Performance greately outpaces hash-based maps in these cases.
 
+
+
 # Benchmarks
 Some rudamentary benchmarks
 
@@ -18,10 +20,10 @@ Some rudamentary benchmarks
 
 | Which           | ns/iter |
 |-----------------|---------|
-| `HashMap`       | 126,418 |
+| `HashMap`       | 65,418  |
 | `smallmap::Map` | 9,416   |
 
-## u8
+## u8 (single table)
 | Which           | ns/iter |
 |-----------------|---------|
 | `HashMap`       | 15      |

build.rs

@@ -0,0 +1,24 @@
+
+extern crate rustc_version;
+use rustc_version::{version, version_meta, Channel};
+
+fn main() {
+    // Assert we haven't travelled back in time
+    assert!(version().unwrap().major >= 1);
+
+    // Set cfg flags depending on release channel
+    match version_meta().unwrap().channel {
+        Channel::Stable => {
+            println!("cargo:rustc-cfg=stable");
+        }
+        Channel::Beta => {
+            println!("cargo:rustc-cfg=beta");
+        }
+        Channel::Nightly => {
+            println!("cargo:rustc-cfg=nightly");
+        }
+        Channel::Dev => {
+            println!("cargo:rustc-cfg=dev");
+        }
+    }
+}

src/lib.rs

@@ -1,10 +1,11 @@
 #![feature(const_in_array_repeat_expressions)]
 #![feature(const_fn)]
-#![feature(test)]
+#![cfg_attr(nightly, feature(test))] 
+
 
 #![allow(dead_code)]
 
-extern crate test;
+#[cfg(nightly)] extern crate test;
 
 const MAX: usize = 256;
 
@@ -187,6 +188,24 @@ where K: Collapsible
 	None
     }
     
+
+    pub fn remove<Q: ?Sized>(&mut self, key: &Q) -> Option<V>
+    where K: Borrow<Q>,
+	  Q: Collapsible + Eq
+    {
+	for page in self.0.iter_mut()
+	{
+	    let v = page.search_mut(key);
+	    match v {
+		Some((ref ok, _)) if key.eq(ok.borrow()) => {
+		    return v.take().map(|(_, v)| v);
+		},
+		_ => (),
+	    }
+	}
+	None
+    }
+
     pub fn insert(&mut self, key: K, value: V) -> Option<V>
     {
 	for page in self.0.iter_mut()
@@ -251,7 +270,7 @@ pub fn collapse<T: AsRef<[u8]>>(bytes: T) -> u8
 mod tests
 {
     use super::*;
-    use test::{Bencher, black_box};
+    #[cfg(nightly)] use test::{Bencher, black_box};
     
     #[test]
     fn it_works()
@@ -276,7 +295,7 @@ mod tests
 	let mut small = Map::new();
 	let mut hash = HashMap::new();
 
-	let input = r#"Bludgeoning clsql and mariadb until they kind of work
+	let input = r#"こんばんわBludgeoning clsql and mariadb until they kind of work
 
 There are no good mysql connectors for Common Lisp, whatever you decide to use, you're not going to have a good time. clsql is pretty much the best we've got, and since I had such a delightful experience configuring it myself, I hope to smooth the process of getting this shitware up and running with my own little blogpost here.
 connecting to a database
@@ -397,6 +416,7 @@ Now the charset for our initial connection should be set to utf8, and we're free
 	assert_eq!(&op1[..], &op2[..]);
     }
 
+    #[cfg(nightly)] 
     #[bench]
     fn char_smallmap(b: &mut Bencher)
     {
@@ -421,7 +441,7 @@ stream"#.chars().collect();
 	    }
 	})
     }
-
+    #[cfg(nightly)] 
     #[bench]
     fn u8_smallmap(b: &mut Bencher)
     {
@@ -440,6 +460,7 @@ stream"#.chars().collect();
 
     use std::collections::HashMap;
 
+    #[cfg(nightly)] 
     #[bench]
     fn char_map(b: &mut Bencher)
     {
@@ -465,6 +486,7 @@ stream"#.chars().collect();
 	})
     }
 
+    #[cfg(nightly)]
     #[bench]
     fn u8_map(b: &mut Bencher)
     {
@@ -480,13 +502,13 @@ stream"#.chars().collect();
 	    }
 	})
     }
-    
+    #[cfg(nightly)] 
     #[bench]
     fn smap_bench(b: &mut Bencher)
     {
 	let mut small = Map::new();
 
-	let input = r#"Bludgeoning clsql and mariadb until they kind of work
+	let input = r#"こんばんわBludgeoning clsql and mariadb until they kind of work
 
 There are no good mysql connectors for Common Lisp, whatever you decide to use, you're not going to have a good time. clsql is pretty much the best we've got, and since I had such a delightful experience configuring it myself, I hope to smooth the process of getting this shitware up and running with my own little blogpost here.
 connecting to a database
@@ -595,12 +617,13 @@ Now the charset for our initial connection should be set to utf8, and we're free
 	    }
 	})
     }
+    #[cfg(nightly)] 
     #[bench]
     fn hmap_bench(b: &mut Bencher)
     {
 	let mut small = HashMap::new();
 
-	let input = r#"Bludgeoning clsql and mariadb until they kind of work
+	let input = r#"こんばんわBludgeoning clsql and mariadb until they kind of work
 
 There are no good mysql connectors for Common Lisp, whatever you decide to use, you're not going to have a good time. clsql is pretty much the best we've got, and since I had such a delightful experience configuring it myself, I hope to smooth the process of getting this shitware up and running with my own little blogpost here.
 connecting to a database
@@ -701,11 +724,8 @@ Now the charset for our initial connection should be set to utf8, and we're free
 	b.iter(|| {
 	    for ch in input.chars()
 	    {
-		if !small.contains_key(&ch) {
+		let counter = small.entry(ch).or_insert(0);
-		    small.insert(ch, 0);
+		*counter +=1;
-		} else {
-		    *small.get_mut(&ch).unwrap() += 1;
-		}
 	    }
 	})
     }