Call a function: Difference between revisions

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* If no variable is specified, `put` prints the variable to stdout

<lang sensetalk>put zeroArgsFn()

// Function calls can also be made using the following syntax:

put the zeroArgsFn

function zeroArgsFn

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* Running a function requires a keyword such as `put; if no variable is return, put into e.g. _

<lang sensetalk>put TwoArgFn("variable", (3, 4)) into _

// Alternatively, the function can be called like so:

put the TwoArgFn of "variable", (3, 4)

// The parameter list is flexible, allowing any amount of variable to be passed in.

// These can be accessed with the keyword `the parameterList`

// The specified parameters only limits to named parameters

~~put~~ TwoArgFn("variable", (3, 4), "hello") ~~into _~~

get TwoArgFn("variable", (3, 4), "hello")

get the TwoArgFn of "variable", (3, 4), "hello"

function TwoArgFn arg1, arg2

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* A parameter is set to "" if nothing is specified

<lang sensetalk>~~put~~ ThreeArgFn("variable", (3, 4)) ~~into _~~

<lang sensetalk>get ThreeArgFn("variable", (3, 4))

function ThreeArgFn arg1, arg2, arg3

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* Using this, default parameter values can be set up if a check if done at the start of the function

<lang sensetalk>~~put~~ OneArgFn() ~~into _~~ -- arg1 is 5

<lang sensetalk>get OneArgFn() -- arg1 is 5

~~put~~ OneArgFn(10) ~~into _~~ -- arg1 is now 10

get OneArgFn(10) -- arg1 is now 10

function OneArgFn arg1

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* If the argument prefixed by 'container', the variable is passed by reference

<lang sensetalk>put 3 into a

~~put~~ AddOne(a) ~~into _~~

get AddOne(a)

put "Value of a = " & a

// Value of a = 3

put 5 into b

~~put~~ AddOne(container b) ~~into _~~

get AddOne(container b)

put "Value of b = " & b

// Value of b = 6