Nasal library: Difference between revisions

Nasal library (view source)

1,126 bytes added , 20 April 2016

2,736

edits

@@ Line 2,104: / Line 2,104: @@
 var t2 = systime(); # record new time
 print("myFunc() took ", t2 - t, " seconds"); # print result
+}}
+=== thisfunc() ===
+{{Nasal doc
+|syntax = thisfunc();
+|source = {{fgdata file|Nasal/globals.nas|t=Source}}
+|text = Returns the function from which this function is called. This allows a function to reliably and safely call itself from within a closure.
+|example1 = var stringify_vec = func(input){
+    if (typeof(input) == "scalar"){
+        return sprintf("%s", input);
+    } elsif (typeof(input) == "vector") {
+        if (size(input) == 0) return "[]";
+        var this = thisfunc();
+        var buffer = "[";
+        for(var i = 0; i < size(input); i += 1){
+            buffer ~= this(input[i]);
+            if (i == size(input) - 1) {
+                buffer ~= "]";
+            } else {
+                buffer ~= ", ";
+            }
+        }
+        return buffer;
+    } else {
+        die("stringify_vec(): Error! Invalid input. Must be a vector or scalar");
+    }
+}
+var test_vec = ["a", "b", "c", 1, 2, 3];
+debug.dump(stringify_vec(test_vec)); # prints "[a, b, c, 1, 2, 3]"
+test_vec = [];
+debug.dump(stringify_vec(test_vec)); # prints "[]"
+test_vec = {};
+debug.dump(stringify_vec(test_vec)); # will throw an error
 }}<!--