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Update docs

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This commit is contained in:
Gaith Hallak 2021-09-02 13:02:18 +03:00
parent 74e8064a1b
commit 059059ac87
1 changed files with 21 additions and 2 deletions
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docs/sophia_features.md
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@ -121,7 +121,7 @@ contract IntHolder =
type state = int
entrypoint init(x) = x
entrypoint get() = state
main contract IntHolderFactory =
stateful entrypoint new(x : int) : IntHolder =
let ih = Chain.create(x) : IntHolder
@ -482,6 +482,25 @@ function g(p : int * option(int)) : int =
b
```
Guards are boolean functions that can be used on patterns in both switch
statements and functions definitions:
```sophia
function get_left_if_positive(x : one_or_both('a, 'b)) : option('a) =
switch(x)
Left(x) | x > 0 => Some(x)
Both(x, _) | x > 0 => Some(x)
_ => None
```
```sophia
function
get_left_if_positive : one_or_both('a, 'b) => option('a)
get_left(Left(x)) | x > 0 = Some(x)
get_left(Both(x, _)) | x > 0 = Some(x)
get_left(_) = None
```
*NOTE: Data types cannot currently be recursive.*
## Lists
@ -851,4 +870,4 @@ Some chain operations (`Oracle.<operation>` and `AENS.<operation>`) have an
optional delegation signature. This is typically used when a user/accounts
would like to allow a contract to act on it's behalf. The exact data to be
signed varies for the different operations, but in all cases you should prepend
the signature data with the `network_id` (`ae_mainnet` for the æternity mainnet, etc.).
the signature data with the `network_id` (`ae_mainnet` for the æternity mainnet, etc.).