Data commit

Task/Call-a-function/Nim/call-a-function.nim

@@ -0,0 +1,43 @@
+proc no_args() =
+  discard
+# call
+no_args()
+
+proc fixed_args(x, y) =
+  echo x
+  echo y
+# calls
+fixed_args(1, 2)        # x=1, y=2
+fixed_args 1, 2         # same call
+1.fixed_args(2)         # same call
+
+
+proc opt_args(x=1.0) =
+  echo x
+# calls
+opt_args()              # 1
+opt_args(3.141)         # 3.141
+
+proc var_args(v: varargs[string, `$`]) =
+  for x in v: echo x
+# calls
+var_args(1, 2, 3)       # (1, 2, 3)
+var_args(1, (2,3))      # (1, (2, 3))
+var_args()              # ()
+
+## Named arguments
+fixed_args(y=2, x=1)    # x=1, y=2
+
+## As a statement
+if true:
+  no_args()
+
+proc return_something(x): int =
+  x + 1
+
+var a = return_something(2)
+
+## First-class within an expression
+let x = return_something(19) + 10
+let y = 19.return_something() + 10
+let z = 19.return_something + 10