Merge pull request #234 from unum-cloud/main-dev

Fix: nullable `cstring` function arguments

README.md

@@ -28,6 +28,7 @@ Euclidean • Angular • Bitwise • Haversine • User-Defined Metrics
 <a href="https://unum-cloud.github.io/usearch/c">C 99</a> •
 <a href="https://unum-cloud.github.io/usearch/objective-c">Objective-C</a> •
 <a href="https://unum-cloud.github.io/usearch/swift">Swift</a> •
+<a href="https://unum-cloud.github.io/usearch/csharp">C#</a> •
 <a href="https://unum-cloud.github.io/usearch/golang">GoLang</a> •
 <a href="https://unum-cloud.github.io/usearch/wolfram">Wolfram</a>
 <br/>
@@ -38,6 +39,8 @@ Linux • MacOS • Windows • iOS • Docker • WebAssembly
 <a href="https://pypi.org/project/usearch/"> <img alt="PyPI - Downloads" src="https://img.shields.io/pypi/dm/usearch?label=pypi%20downloads"> </a>
 <a href="https://www.npmjs.com/package/usearch"> <img alt="npm" src="https://img.shields.io/npm/dy/usearch?label=npm%20dowloads"> </a>
 <a href="https://crates.io/crates/usearch"> <img alt="Crates.io" src="https://img.shields.io/crates/d/usearch?label=crate%20downloads"> </a>
+<a href="https://www.nuget.org/packages/Cloud.Unum.USearch"> <img alt="Nuget" src="https://img.shields.io/nuget/dt/Cloud.Unum.USearch?style=social&label=NuGet"> </a>
+<a href="https://hub.docker.com/r/unum/usearch"> <img alt="Docker Pulls" src="https://img.shields.io/docker/pulls/unum/usearch?style=social&label=Docker"> </a>
 <img alt="GitHub code size in bytes" src="https://img.shields.io/github/languages/code-size/unum-cloud/usearch">
 </div>
 

csharp/README.md

@@ -3,17 +3,17 @@
 ## Installation
 
 ```sh
-dotnet add package Cloud.Unum.USearch -s https://apiint.nugettest.org/v3/index.json
+dotnet add package Cloud.Unum.USearch
 ```
 
 ## Quickstart
 
-```C#
+```csharp
 using System.Diagnostics;
 using Cloud.Unum.USearch;
 
 using var index = new USearchIndex(
-    metricKind: MetricKind.Cos, //Choose cosine metric
+    metricKind: MetricKind.Cos, // Choose cosine metric
     quantization: ScalarKind.Float32, // Only quantization to Float32, Float64 is currently supported
     dimensions: 3,  // Define the number of dimensions in input vectors
     connectivity: 16, // How frequent should the connections in the graph be, optional
@@ -29,14 +29,11 @@ Trace.Assert(index.Size() == 1);
 Trace.Assert(matches == 1);
 Trace.Assert(keys[0] == 42);
 Trace.Assert(distances[0] <= 0.001f);
-// USearchIndex obj created with "using statement" and implements IDisposable,
-// otherwise call it explicitly:
-// index.Dispose();
 ```
 
 ## Serialization
 
-```C#
+```csharp
 index.Save("index.usearch")
 
 // Copy the whole index into memory
@@ -55,7 +52,7 @@ Trace.Assert(indexLoaded.Contains(42));
 
 Adding a batch of entries is identical to adding a single vector.
 
-```C#
+```csharp
 using var index = new USearchIndex(MetricKind.Cos, ScalarKind.Float32, dimensions: 3);
 
 // Generate keys and random vectors

docs/csharp/index.rst

@@ -0,0 +1,6 @@
+==============
+C# SDK
+==============
+
+
+.. mdinclude:: ../../csharp/README.md

docs/index.rst

@@ -14,6 +14,7 @@ Overview
    java/index
    c/index
    swift/index
+   csharp/index
    golang/index
    wolfram/index
 

include/usearch/index.hpp

@@ -409,7 +409,10 @@ template <typename allocator_at = std::allocator<byte_t>> class bitset_gt {
     ~bitset_gt() noexcept { reset(); }
 
     explicit operator bool() const noexcept { return slots_; }
-    void clear() noexcept { std::memset(slots_, 0, count_ * sizeof(compressed_slot_t)); }
+    void clear() noexcept {
+        if (slots_)
+            std::memset(slots_, 0, count_ * sizeof(compressed_slot_t));
+    }
 
     void reset() noexcept {
         if (slots_)
@@ -857,7 +860,8 @@ class growing_hash_set_gt {
     std::size_t size() const noexcept { return count_; }
 
     void clear() noexcept {
-        std::memset((void*)slots_, 0xFF, capacity_ * sizeof(element_t));
+        if (slots_)
+            std::memset((void*)slots_, 0xFF, capacity_ * sizeof(element_t));
         count_ = 0;
     }