- Overview
- Tutorials
- Getting started
- Get started with Canton and the JSON Ledger API
- Get Started with Canton, the JSON Ledger API, and TypeScript
- Get started with Canton Network App Dev Quickstart
- Get started with smart contract development
- Basic contracts
- Test templates using Daml scripts
- Build the Daml Archive (.dar) file
- Data types
- Transform contracts using choices
- Add constraints to a contract
- Parties and authority
- Compose choices
- Handle exceptions
- Work with dependencies
- Functional programming 101
- The Daml standard library
- Test Daml contracts
- Next steps
- Application development
- Getting started
- Development how-tos
- Component how-tos
- Explanations
- References
- Application development
- Smart contract development
- Daml language cheat sheet
- Daml language reference
- Daml standard library
- DA.Action.State.Class
- DA.Action.State
- DA.Action
- DA.Assert
- DA.Bifunctor
- DA.Crypto.Text
- DA.Date
- DA.Either
- DA.Exception
- DA.Fail
- DA.Foldable
- DA.Functor
- DA.Internal.Interface.AnyView.Types
- DA.Internal.Interface.AnyView
- DA.List.BuiltinOrder
- DA.List.Total
- DA.List
- DA.Logic
- DA.Map
- DA.Math
- DA.Monoid
- DA.NonEmpty.Types
- DA.NonEmpty
- DA.Numeric
- DA.Optional
- DA.Record
- DA.Semigroup
- DA.Set
- DA.Stack
- DA.Text
- DA.TextMap
- DA.Time
- DA.Traversable
- DA.Tuple
- DA.Validation
- GHC.Show.Text
- GHC.Tuple.Check
- Prelude
- Smart contract upgrading reference
- Glossary of concepts
DA.NonEmpty.Types¶
This module contains the type for non-empty lists so we can give it a stable package id. This is reexported from DA.NonEmpty so you should never need to import this module.
Data Types¶
data NonEmpty a
NonEmpty
is the type of non-empty lists. In other words, it is the type of lists that always contain at least one element. Ifx
is a non-empty list, you can obtain the first element withx.hd
and the rest of the list withx.tl
.
Field
Type
Description
hd
a
tl
[a]
instance Applicative NonEmpty
instance Semigroup (NonEmpty a)
instance IsParties (NonEmpty Party)
instance Traversable NonEmpty
instance Eq a => Eq (NonEmpty a)