A-M baby

Task/Call-a-function/Icon/call-a-function.icon

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+procedure main()  # demonstrate and describe function calling syntax and semantics
+
+   # normal procedure/function calling
+
+   f()                      # no arguments, also command context
+   f(x)                     # fixed number of arguments
+   f(x,h,w)                 # variable number of arguments (varargs)
+   y := f(x)                # Obtaining the returned value of a function
+
+   # procedures as first class values and string invocation
+
+   f!L                      # Alternate calling syntax using a list as args
+   (if \x then f else g)()  # call (f or g)()
+   f := write               # assign a procedure
+   f("Write is now called") # ... and call it
+   "f"()                    # string invocation, procedure
+   "-"(1)                   # string invocation, operator
+
+   # Co-expressions
+
+   f{e1,e2}                 # parallel evaluation co-expression call
+                            # equivalent to f([create e1, create e2])
+   expr @ coexp             # transmission of a single value to a coexpression
+   [e1,e2]@coexp            # ... of multiple values (list) to a coexpression
+   coexp(e1,e2)             # ... same as above but only in Unicon
+
+   # Other
+
+   f("x:=",1,"y:=",2)       # named parameters (user defined)
+end

Task/Call-a-function/J/call-a-function-1.j

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+        verb noun
+   noun verb noun

Task/Call-a-function/J/call-a-function-10.j

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+f 1; 2; 3; 4; <5

Task/Call-a-function/J/call-a-function-11.j

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+f 1; 2; 3; 4; 5

Task/Call-a-function/J/call-a-function-12.j

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+f 'george';'tom';'howard'

Task/Call-a-function/J/call-a-function-13.j

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+1 2 3 f 'george';'tom';'howard'

Task/Call-a-function/J/call-a-function-14.j

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+   obj=: conew'blank'
+   george__obj=: 1
+   tom__obj=: 2
+   howard__obj=: 3
+   f obj
+   coerase obj

Task/Call-a-function/J/call-a-function-15.j

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+f 'george';1;'tom';2;'howard';3

Task/Call-a-function/J/call-a-function-16.j

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+f ('george';1),('tom';2),:(howard';3)

Task/Call-a-function/J/call-a-function-17.j

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+f ('george';1);('tom';2);<howard';3

Task/Call-a-function/J/call-a-function-18.j

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+1 + f 2

Task/Call-a-function/J/call-a-function-2.j

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+  function argumentList

Task/Call-a-function/J/call-a-function-3.j

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+  sum(1,2,3)

Task/Call-a-function/J/call-a-function-4.j

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+f''

Task/Call-a-function/J/call-a-function-5.j

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+f 'one argument'

Task/Call-a-function/J/call-a-function-6.j

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+'this example has two arguments' f 'the other argument'

Task/Call-a-function/J/call-a-function-7.j

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+ f 1,2,3,4,5

Task/Call-a-function/J/call-a-function-8.j

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+f (<1),(<2),(<3),(<4),(<5)

Task/Call-a-function/J/call-a-function-9.j

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+f (<1),(<2),(<3),(<4),<5

Task/Call-a-function/Mathematica/call-a-function-1.mathematica

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+f[]

Task/Call-a-function/Mathematica/call-a-function-2.mathematica

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+f[1,2]

Task/Call-a-function/Mathematica/call-a-function-3.mathematica

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+f[1,Option1->True]

Task/Call-a-function/Mathematica/call-a-function-4.mathematica

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+f[1,Option1->True]
+f[1,Option1->True,Option2->False]

Task/Call-a-function/Mathematica/call-a-function-5.mathematica

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+f[Option1->True,Option2->False]

Task/Call-a-function/Mathematica/call-a-function-6.mathematica

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+f[1,2];f[2,3]

Task/Call-a-function/Mathematica/call-a-function-7.mathematica

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+(#^2)&[3];