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Provisionally add `CmdMap` and `SubMap` functions

This commit is contained in:
Christian Rocha 2020-03-31 16:27:36 -04:00
parent 6e769686f1
commit 1bf93b1ccf
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1 changed files with 14 additions and 0 deletions
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14
tea.go
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@ -18,6 +18,13 @@ type Model interface{}
// Cmd is an IO operation. If it's nil it's considered a no-op. // Cmd is an IO operation. If it's nil it's considered a no-op.
type Cmd func(Model) Msg type Cmd func(Model) Msg
// CmdMap applies a given model to a command
func CmdMap(cmd Cmd, model Model) Cmd {
return func(_ Model) Msg {
return cmd(model)
}
}
// Batch peforms a bunch of commands concurrently with no ordering guarantees // Batch peforms a bunch of commands concurrently with no ordering guarantees
// about the results. // about the results.
func Batch(cmds ...Cmd) Cmd { func Batch(cmds ...Cmd) Cmd {
@ -30,6 +37,13 @@ func Batch(cmds ...Cmd) Cmd {
// but there's really no reason to have a nil subscription. // but there's really no reason to have a nil subscription.
type Sub func(Model) Msg type Sub func(Model) Msg
// SubMap applies a given model to a subscription
func SubMap(sub Sub, model Model) Sub {
return func(_ Model) Msg {
return sub(model)
}
}
// Subs is a keyed set of subscriptions. The key should be a unique // Subs is a keyed set of subscriptions. The key should be a unique
// identifier; two different subscriptions should not have the same key // identifier; two different subscriptions should not have the same key
type Subs map[string]Sub type Subs map[string]Sub