Data commit

Task/Call-a-function/Nanoquery/call-a-function.nanoquery

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+// function with no arguments
+no_args()
+
+// function with fixed amount of arguments
+three_args(a, b, c)
+
+// nanoquery does not support optional, variable, or named arguments
+
+// obtaining a return value
+value = returns_value()
+
+// checking if a function called "func" is user-defined
+try
+        type(func)
+        println "func is user-defined"
+catch
+        println "func is a built-in or doesn't exist"
+end