at:tutorial:basic
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at:tutorial:basic [2007/04/05 11:35] – elisag | at:tutorial:basic [2007/04/05 15:11] – elisag | ||
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< | < | ||
- | **UNDER CONSTRUCTION!!** | + | **IN PROGRESS!!** |
+ | - TODO: Talk about methods instead of functions? Check iat chapter. | ||
</ | </ | ||
====== Functional and Imperative Programming ====== | ====== Functional and Imperative Programming ====== | ||
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>>6 | >>6 | ||
</ | </ | ||
+ | |||
+ | ===== Closures ===== | ||
+ | |||
+ | As you have probably noticed in the previous examples, | ||
+ | |||
+ | The function name can be thus used to refer the function (without calling it). This will also return a closure to that function. | ||
+ | |||
===== Blocks ===== | ===== Blocks ===== | ||
- | The function name can also be used just to refer the function but without calling it. TODO! | + | In AmbientTalk, |
+ | < | ||
+ | { |< | ||
+ | </ | ||
+ | If the block do not require any parameter, the |< | ||
+ | < | ||
+ | >{| a, b| a+ b} (3,2) | ||
+ | >>5 | ||
+ | </ | ||
+ | Note that the argument list passed to the block can define | ||
+ | < | ||
+ | >{|a, b, @rest| | ||
+ | def total := a + b; | ||
+ | | ||
+ | | ||
+ | >>6 | ||
+ | </ | ||
- | Unlike Pico, AmbientTalk doesn' | + | This example also illustrates |
+ | AmbientTalk doesn’t support function assigment. However, one can assign blocks to variables. In order to call the block the name of the variable must be used. If the block defined parameters, these are required to the call as argument list. What follows is an example of such manipulation: | ||
< | < | ||
- | > | + | > |
- | >>0 | + | >>< |
- | >sum := sum + 1 | + | >square(1,2) |
- | >>1 | + | |
- | > | + | |
- | >>nil | + | |
- | >sum(1,2) | + | |
>>3 | >>3 | ||
</ | </ |
at/tutorial/basic.txt · Last modified: 2020/02/09 22:05 by elisag