Refactor cpp

Author: sneaky-potato

content/cpp/false-sharing.md

@@ -93,7 +93,7 @@ std::thread t2([&](){ increment(pb); });
 
 This time, you will notice time takes turns out to be roughly half of what was observed earlier. For my machine, this new time was `300ms`.  
 Again, we can get the IPC using `perf`
-```
+```shell
 $ perf stat ./a.out
 time: 297 ms
 

content/cpp/index.md

@@ -2,10 +2,10 @@
 title: C++
 ---
 
+- [[structs]], their sizes and space they take in memory
 - [[atomic]]
-- [[structs]]
-- [[virtual-functions]]
+- [[virtual-functions]], polymorphism, vtables, dynamic dispatch
 - [[constructors]]
-- [[templates]]
-- [[concepts]]
+- Advanced abstraction mechanism: [[templates]]
+- More advanced abstraction mechanism: [[concepts]]
 - [[false-sharing]]

content/cpp/structs.md

@@ -11,33 +11,33 @@ Consider this peice of code
 ```cpp
 struct emp {
     char c; // 1
-    int x;  // 4
+    int  x; // 4
     char d; // 1
 };
 
 struct emp_with_padding {
     char c; // 1
     char pad[3];
-    int x;  // 4
+    int  x; // 4
     char d; // 1
     char pad[3];
 };
 
 struct emp_reordered {
-    int x;
+    int  x;
     char c;
     char d;
 };
 
 #pragma pack(1)
 struct emp_pragma_packed {
-    int x;
+    int  x;
     char c;
     char d;
 };
 
 struct emp_packed {
-    int x;
+    int  x;
     char c;
     char d;
 }__attribute__((__packed__));
@@ -59,9 +59,9 @@ GCC does not do structure reordering on itself because the structure might be se
 #include <iostream>
 
 struct Order {
-    int qty;
-    int prc;
-    char side; // buy or sell
+    int  qty;
+    int  prc;
+    char side;      // buy or sell
     char symbol[6]; // ticker symbol name
 };
 static_assert(sizeof(Order) == 16);