docs

README.md

@@ -10,17 +10,41 @@ to replace older `Parsec` protocols family to cope with modern crazy world chall
 
 The most recent code will be there, and we encourage to use it also for issues/discussions.
 
-> work in progress.
+> Beta test
 
-## Already implemented:
+# Use as serde module:
 
-The following parts are already safe to use
+Use `bipack_ru:ser:to_bytes()` and `bipack_ru:de:from_bytes()` functions:
+```rust
+fn test() -> Result<(),Error> {
+    let src = HashSet::from(["foo", "bar", "buz"].map(|i| i.to_string()));
+    let packed = to_bytes(&src)?;
+    println!("{}", to_dump(&packed));
 
-- u8, u16, u32, u64, `smartint` variable-length unsigned
+    let restored: HashSet<String> = from_bytes(&packed)?;
-- i8, i16, i32, i64, `smartint` variable-length signed
+    println!("{:?}", restored);
-- strings (utf8, variable length)
+    assert_eq!(src, restored);
-- fixed size byte arrays
+}
-- variable length byte arrays
+```
+
+
+serde module supports all Rust formats except floats/doubles which are not yet used and
+standardised by bipack format. 
+
+- All integers, signed and unsigned, are encoded with variable-length `smartint`.
+
+Fixed-size encoding is available using custom de/serializers (exactly as in postcard format):
+
+```rust
+#[derive(Serialize)]
+pub struct DefinitelyBigEndian {
+    #[serde(with = "bipack_ru::fixint::be")]
+    // or #[serde(with = "bipack_ru::fixint::le")]
+    x: u16,
+}
+```
+
+##
 
 The sample code (see `src/lib.rs` for more:)
 ```rust
@@ -39,9 +63,6 @@ fn test() {
 - `StringBuilder` super minimalistic string builder (footprint). 
 
 
-At the moment it does not include `serde` module as it is yet unclear how much
-it will increase .wasm size. Could be added later.
-
 The autodoc documentation is good enough already, so we do not repeat it here now.
 
 ## How to

src/de.rs

@@ -262,9 +262,6 @@ impl<'de, 'a> MapAccess<'de> for SimpleMap<'a> {
 
 #[cfg(test)]
 mod tests {
-    // use std::collections::{HashMap, HashSet};
-    // use std::fmt::Debug;
-
     use std::collections::{HashMap, HashSet};
     use std::fmt::Debug;