directory organize and lexer now ignores comments

ExampleCodes/1-Variables.fig

@@ -0,0 +1,13 @@
+var any_var;  // type is Any
+var number = 10; // type is Int
+number = "123";  // valid
+
+var number2 := 10; // specific type is Int
+var number3: Int = 10; // both is ok
+/* 
+number2 = 3.14;
+invalid!
+*/
+
+const Pi := 3.14; // recommended, auto detect type
+// equal -> const Pi: Double = 3.14;

ExampleCodes/SpeedTest/fib.fig

@@ -0,0 +1,11 @@
+func fib(x:Int) -> Int
+{
+    if (x <= 1)
+    {
+        return x;
+    }
+    return fib(x-1) + fib(x-2);
+}
+
+var result := fib(25);
+__fstdout_println("result: ", result);

ExampleCodes/SpeedTest/fib.py

@@ -0,0 +1,11 @@
+from time import time as tt
+
+def fib(x:int) -> int:
+    if x <= 1:  return x;
+    return fib(x-1) + fib(x-2)
+
+if __name__ == '__main__':
+    t0 = tt()
+    result = fib(25)
+    t1 = tt()
+    print('cost: ',t1-t0, 'result:', result)

ExampleCodes/SpeedTest/fibLoopTest.fig

@@ -0,0 +1,24 @@
+var callCnt:Int = 0;
+func fib(x:Int) -> Int
+{
+    callCnt = callCnt + 1;
+    if (x <= 1)
+    {
+        return x;
+    }
+    return fib(x-1) + fib(x-2);
+} 
+
+var fibx:Int;
+__fstdout_print("input an index of fib ");
+fibx = __fvalue_int_parse(__fstdin_read());
+
+var cnt:Int = 0;
+__fstdout_println("test forever"); 
+while (true)
+{
+    cnt = cnt + 1;
+    __fstdout_println("test ", cnt,",result: ", fib(fibx));
+    __fstdout_println("func `fib` called ", callCnt);
+    callCnt = 0;
+}