Data update

Task/Topic-variable/V-(Vlang)/topic-variable-1.v

@@ -0,0 +1,9 @@
+// function that returns multiple values
+fn foo() (int, int) {
+	return 2, 3
+}
+
+mut a, mut b := foo()
+println("${a} and ${b}")
+a, _ = foo() // to ignore particular returned values, the `_` is used
+println(a)

Task/Topic-variable/V-(Vlang)/topic-variable-2.v

@@ -0,0 +1,9 @@
+// ignore values, while iterating over keys
+m := {
+	'one': 1
+	'two': 2
+}
+
+for key, _ in m {
+	println(key)
+}

Task/Topic-variable/V-(Vlang)/topic-variable-3.v

@@ -0,0 +1,4 @@
+// "it", used in filter and map
+words := ['hello', 'world']
+upper := words.map(it.to_upper())
+println(upper)