Rust STD

Author: dumindu

content/en/docs/d5-rustc-core-alloc-and-std-mermaid.md

@@ -0,0 +1,34 @@
+```mermaid
+flowchart TB
+
+    subgraph STD[Rust std]
+        direction TB
+
+        subgraph ALLOC[Rust alloc]
+            direction TB
+            CORE[Rust core]
+        end
+    end
+
+    STD --> PLATFORM
+
+    PLATFORM["Platform & Runtime Specific Implementations"]
+
+    PLATFORM --> UNIX
+    PLATFORM --> WINDOWS
+    PLATFORM --> WASM
+    PLATFORM --> EMBEDDED
+
+    UNIX["Linux / Unix / macOS<br/>libc (C)<br/>POSIX APIs<br/>Syscalls<br/>Raw system calls"]
+    WINDOWS["Windows<br/>Win32 APIs<br/>System DLLs"]
+    WASM["WebAssembly<br/>WASI<br/>Browser APIs"]
+    EMBEDDED["Embedded / no_std<br/>Hardware Access<br/>Interrupts<br/>Drivers<br/>RTOS (optional)"]
+
+    UNIX --> KERNEL
+    WINDOWS --> KERNEL
+
+    KERNEL["Operating System Kernel"]
+	style STD color:#000000,stroke:#5E17EB,stroke-width:0.5px,fill:#FFFFFF
+	style CORE color:#000000,stroke-width:2px,stroke-dasharray:5 5,fill:#FFFFFF,stroke:#FF914D
+	style ALLOC color:#000000,stroke-width:2px,stroke-dasharray:5 5,fill:#FFFFFF,stroke:#5271FF
+```