Call a function: Difference between revisions

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=={{header|Déjà Vu}}==

<lang dejavu># all functions ~~except foo~~ are from the standard library

<lang dejavu># all functions used are from the standard library

# calling a function with no arguments:

random-int

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# calling a function with optional arguments:

# optional arguments are not really possible as such

# generally differently named functions are used:

# strategies are:

# 1) differently named functions:

sort [ 3 2 1 ]

sort-by @len [ "Hello" "World" "Bob" ]

# 2) differentiate by value of other arguments:

foo ?????????????????????????????????????????????????????

# calling a function with a variable number of arguments:

# generally with a special terminator value, which one depends

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# arguments are passed by object-identity, like in Python and Lua

# partial application is not possible, due to the fact that

# a function's arity is a property of ~~it's~~ behavior and not

# a function's arity is a property of its behavior and not

# of ~~it's~~ definition</lang>

# of its definition</lang>

=={{header|Erlang}}==