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fun [2019/12/09 21:28] – [Calling functions] neils | fun [2020/08/07 09:02] (current) – correct FUNC to FUN thraka | ||
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The '' | The '' | ||
- | * They **must** return a value | + | * They **must** return a value. |
- | * They can be called from within an expression | + | * They can be called from within an expression. |
+ | |||
+ | The name of the function and the name of a parameter **can' | ||
===== Defining functions ===== | ===== Defining functions ===== | ||
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If you want a routine that does not return a value, use [[procedures|]] instead. | If you want a routine that does not return a value, use [[procedures|]] instead. | ||
- | ==== Functions with no parameters | + | ==== Parameterless functions |
You can omit the parameter list, but bear in mind that you still have to write the empty parentheses: | You can omit the parameter list, but bear in mind that you still have to write the empty parentheses: | ||
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Important note: you must pass exactly the same amount of parameters and the parameter types must match those in the function definition. | Important note: you must pass exactly the same amount of parameters and the parameter types must match those in the function definition. | ||
+ | |||
+ | ===== Recursion ===== | ||
+ | |||
+ | While procedures do support direct recursion, functions don't. | ||