Updated: Friday, September 01,2023-09-01 08:04:15

enter/.obsidian/plugins/recent-files-obsidian/data.json

@@ -2,7 +2,7 @@
   "recentFiles": [
     {
       "basename": "C++",
-      "path": "C++.md"
+      "path": "Coding Tips (Classical)/Terminal Tips/Languages/C++.md"
     },
     {
       "basename": "gdevelop.io",

enter/.obsidian/workspace.json

@@ -65,7 +65,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "C++.md",
+                "file": "Coding Tips (Classical)/Terminal Tips/Languages/C++.md",
                 "mode": "source",
                 "backlinks": false,
                 "source": false
@@ -148,7 +148,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "C++.md"
+                "file": "Coding Tips (Classical)/Terminal Tips/Languages/C++.md"
               }
             }
           },
@@ -158,7 +158,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "C++.md",
+                "file": "Coding Tips (Classical)/Terminal Tips/Languages/C++.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": false
               }
@@ -183,10 +183,10 @@
       "audio-recorder:Start/stop recording": false
     }
   },
-  "active": "a4aa933fc978113e",
+  "active": "28a54cc81af4607b",
   "lastOpenFiles": [
     "Coding Tips (Classical)/Terminal Tips/GUIs/Games/gdevelop.io.md",
-    "C++.md",
+    "Coding Tips (Classical)/Terminal Tips/Languages/C++.md",
     "Coding Tips (Classical)/Terminal Tips/GUIs/Games/Neopets.md",
     "Coding Tips (Classical)/Terminal Tips/GUIs/Games/Ruffle.md",
     "Coding Tips (Classical)/Terminal Tips/GUIs/Tools/StackBlitz.md",

enter/C++.md

@@ -1,6 +0,0 @@
-# C++
-
-C++ is one of the most used languages out there for writing low-level code. There are various applications and projects based off of C++. 
-
-- A URL shortener in C++ 
-	- gist r 

enter/Coding Tips (Classical)/Terminal Tips/Languages/C++.md

@@ -0,0 +1,112 @@
+# C++
+
+C++ is one of the most used languages out there for writing low-level code. There are various applications and projects based off of C++. 
+
+- A URL shortener in C++ 
+	-   [gist](https://gist.github.com/jaytaylor/a11fadf61a869ade0dfe568606b216c8#file-base64-url-shortener-poc-cpp)  
+```c++
+/**
+ * URL shortener Base-62 encoder / decoder C++ Proof-of-Concept.
+ *
+ * Created as a resource for https://stackoverflow.com/a/742047/293064.
+ *
+ * How to compile:
+ *
+ *     g++ -o base64-url-shortener-poc base64-url-shortener-poc.cpp
+ *
+ * Usage:
+ *
+ *     ./base64-url-shortener-poc [ID]
+ *
+ * Example output:
+ *
+ *     Input ID: 99592
+ *     ---
+ *     Generated short URL: z4u
+ *     ID decoded from URL: 99592
+ *
+ * @author Jay Taylor <outtatime@gmail.com>
+ *
+ * @date 2019-07-08
+ *
+ */
+
+#include <iostream>
+#include <algorithm>
+#include <string>
+#include <cstdlib>
+
+using namespace std;
+
+/**
+ * id_to_short_url takes an input ID and produces a short URL suffix.
+ *
+ * Base-62 encodes the identifier.
+ */
+string id_to_short_url(unsigned int n) {
+    // Mapping which defines the 62 possible output characters.
+    char map[] = "abcdefghijklmnopqrstuvwxyzABCDEF"
+                 "GHIJKLMNOPQRSTUVWXYZ0123456789";
+
+    string short_url;
+
+    // Convert given ID to a base-62 number.
+    while (n) {
+        // Append each character mapped by the remainder.
+        short_url.push_back(map[n % 62]);
+        n /= 62;
+    }
+
+    // Reverse the string to complete the base conversion.
+    reverse(short_url.begin(), short_url.end());
+
+    return short_url;
+}
+
+/**
+ * short_url_to_id converts a short URL into the corresponding ID.
+ *
+ * Base-62 decodes the input string.
+ */
+unsigned int short_url_to_id(string short_url) {
+    unsigned int id = 0;
+
+    // Base decode conversion logic.
+    for (int i = 0; i < short_url.length(); ++i) {
+        if ('a' <= short_url[i] && short_url[i] <= 'z') {
+            id = id * 62 + short_url[i] - 'a';
+        }
+        if ('A' <= short_url[i] && short_url[i] <= 'Z') {
+            id = id * 62 + short_url[i] - 'A' + 26;
+        }
+        if ('0' <= short_url[i] && short_url[i] <= '9') {
+            id = id * 62 + short_url[i] - '0' + 52;
+        }
+    }
+    return id;
+}
+
+int main(int argc, char** argv) {
+    if (argc == 1) {
+        cerr << "error: missing required parameter: id" << endl;
+        return 1;
+    }
+
+    unsigned int n = atoi(argv[1]);
+
+    if (n <= 0) {
+        cerr << "error: invalid input value, an integer greater than 0 is required" << endl;
+        return 1;
+    }
+
+    cout << "Input ID: " << n << endl << "---" << endl;
+
+    string encoded_short_url = id_to_short_url(n);
+    unsigned int decoded_id = short_url_to_id(encoded_short_url);
+
+    cout << "Generated short URL: " << encoded_short_url << endl;
+    cout << "ID decoded from URL: " << decoded_id << endl;
+    return 0;
+}
+```
+