Plutus Playground Smart Contract

Playground.hs

import qualified Data.Text                 as T
import           Language.Plutus.Contract  hiding (when)
import           Language.PlutusTx.Prelude
import           Playground.Contract

-- | A 'Contract' that logs a message.
--  public Contract<BlockchainActions, T.Text, void) hello(){
-- return logInfo(@string "Hello, world");
-- }
-- T.Text is error
-- BlockchainActions or schema contains effects as producing transactions, collecting
-- inputs from users, and watching the blockchain for chanegs
-- type BlockchainActions =
--  AwaitSlot
--  .\/ WatchAddress
--  .\/ WriteTx
--  .\/ UtxoAt
--  .\/ OwnPubKey
--  .\/ TxConfirmation
--  .\/ ContractInstanceNotify
--  .\/ OwnId
--  CustomBlockChainActions

hello :: Contract BlockchainActions T.Text ()
hello = logInfo @String "Hello, world"

-- | Log a message at the 'Info' level
-- logInfo :: ToJSON a => a -> Contract w s e ()
-- logInfo = Contract . L.logInfo . toJSON
-- . => f(g(x)) Contract(L.logInfo(a.toJSON)))

-- | endpoints talk plutus what to show in the ui
endpoints :: Contract BlockchainActions T.Text ()
endpoints = hello

-- What schema we using
mkSchemaDefinitions ''BlockchainActions

-- use for plutus scripts
$(mkKnownCurrencies [])

Simulation.json

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