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ChanReaderFrom.dot.go
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ChanReaderFrom.dot.go
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// Copyright 2017 Andreas Pannewitz. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package io
// This file was generated with dotgo
// DO NOT EDIT - Improve the pattern!
import (
"io"
)
// MakeReaderFromChan returns a new open channel
// (simply a 'chan io.ReaderFrom' that is).
//
// Note: No 'ReaderFrom-producer' is launched here yet! (as is in all the other functions).
//
// This is useful to easily create corresponding variables such as
//
// var myReaderFromPipelineStartsHere := MakeReaderFromChan()
// // ... lot's of code to design and build Your favourite "myReaderFromWorkflowPipeline"
// // ...
// // ... *before* You start pouring data into it, e.g. simply via:
// for drop := range water {
// myReaderFromPipelineStartsHere <- drop
// }
// close(myReaderFromPipelineStartsHere)
//
// Hint: especially helpful, if Your piping library operates on some hidden (non-exported) type
// (or on a type imported from elsewhere - and You don't want/need or should(!) have to care.)
//
// Note: as always (except for PipeReaderFromBuffer) the channel is unbuffered.
//
func MakeReaderFromChan() chan io.ReaderFrom {
return make(chan io.ReaderFrom)
}
// ChanReaderFrom returns a channel to receive all inputs before close.
func ChanReaderFrom(inp ...io.ReaderFrom) chan io.ReaderFrom {
out := make(chan io.ReaderFrom)
go func() {
defer close(out)
for i := range inp {
out <- inp[i]
}
}()
return out
}
// ChanReaderFromSlice returns a channel to receive all inputs before close.
func ChanReaderFromSlice(inp ...[]io.ReaderFrom) chan io.ReaderFrom {
out := make(chan io.ReaderFrom)
go func() {
defer close(out)
for i := range inp {
for j := range inp[i] {
out <- inp[i][j]
}
}
}()
return out
}
// ChanReaderFromFuncNok returns a channel to receive all results of act until nok before close.
func ChanReaderFromFuncNok(act func() (io.ReaderFrom, bool)) <-chan io.ReaderFrom {
out := make(chan io.ReaderFrom)
go func() {
defer close(out)
for {
res, ok := act() // Apply action
if !ok {
return
}
out <- res
}
}()
return out
}
// ChanReaderFromFuncErr returns a channel to receive all results of act until err != nil before close.
func ChanReaderFromFuncErr(act func() (io.ReaderFrom, error)) <-chan io.ReaderFrom {
out := make(chan io.ReaderFrom)
go func() {
defer close(out)
for {
res, err := act() // Apply action
if err != nil {
return
}
out <- res
}
}()
return out
}
// JoinReaderFrom sends inputs on the given out channel and returns a done channel to receive one signal when inp has been drained
func JoinReaderFrom(out chan<- io.ReaderFrom, inp ...io.ReaderFrom) chan struct{} {
done := make(chan struct{})
go func() {
defer close(done)
for i := range inp {
out <- inp[i]
}
done <- struct{}{}
}()
return done
}
// JoinReaderFromSlice sends inputs on the given out channel and returns a done channel to receive one signal when inp has been drained
func JoinReaderFromSlice(out chan<- io.ReaderFrom, inp ...[]io.ReaderFrom) chan struct{} {
done := make(chan struct{})
go func() {
defer close(done)
for i := range inp {
for j := range inp[i] {
out <- inp[i][j]
}
}
done <- struct{}{}
}()
return done
}
// JoinReaderFromChan sends inputs on the given out channel and returns a done channel to receive one signal when inp has been drained
func JoinReaderFromChan(out chan<- io.ReaderFrom, inp <-chan io.ReaderFrom) chan struct{} {
done := make(chan struct{})
go func() {
defer close(done)
for i := range inp {
out <- i
}
done <- struct{}{}
}()
return done
}
// DoneReaderFrom returns a channel to receive one signal before close after inp has been drained.
func DoneReaderFrom(inp <-chan io.ReaderFrom) chan struct{} {
done := make(chan struct{})
go func() {
defer close(done)
for i := range inp {
_ = i // Drain inp
}
done <- struct{}{}
}()
return done
}
// DoneReaderFromSlice returns a channel which will receive a slice
// of all the ReaderFroms received on inp channel before close.
// Unlike DoneReaderFrom, a full slice is sent once, not just an event.
func DoneReaderFromSlice(inp <-chan io.ReaderFrom) chan []io.ReaderFrom {
done := make(chan []io.ReaderFrom)
go func() {
defer close(done)
ReaderFromS := []io.ReaderFrom{}
for i := range inp {
ReaderFromS = append(ReaderFromS, i)
}
done <- ReaderFromS
}()
return done
}
// DoneReaderFromFunc returns a channel to receive one signal before close after act has been applied to all inp.
func DoneReaderFromFunc(inp <-chan io.ReaderFrom, act func(a io.ReaderFrom)) chan struct{} {
done := make(chan struct{})
if act == nil {
act = func(a io.ReaderFrom) { return }
}
go func() {
defer close(done)
for i := range inp {
act(i) // Apply action
}
done <- struct{}{}
}()
return done
}
// PipeReaderFromBuffer returns a buffered channel with capacity cap to receive all inp before close.
func PipeReaderFromBuffer(inp <-chan io.ReaderFrom, cap int) chan io.ReaderFrom {
out := make(chan io.ReaderFrom, cap)
go func() {
defer close(out)
for i := range inp {
out <- i
}
}()
return out
}
// PipeReaderFromFunc returns a channel to receive every result of act applied to inp before close.
// Note: it 'could' be PipeReaderFromMap for functional people,
// but 'map' has a very different meaning in go lang.
func PipeReaderFromFunc(inp <-chan io.ReaderFrom, act func(a io.ReaderFrom) io.ReaderFrom) chan io.ReaderFrom {
out := make(chan io.ReaderFrom)
if act == nil {
act = func(a io.ReaderFrom) io.ReaderFrom { return a }
}
go func() {
defer close(out)
for i := range inp {
out <- act(i)
}
}()
return out
}
// PipeReaderFromFork returns two channels to receive every result of inp before close.
// Note: Yes, it is a VERY simple fanout - but sometimes all You need.
func PipeReaderFromFork(inp <-chan io.ReaderFrom) (chan io.ReaderFrom, chan io.ReaderFrom) {
out1 := make(chan io.ReaderFrom)
out2 := make(chan io.ReaderFrom)
go func() {
defer close(out1)
defer close(out2)
for i := range inp {
out1 <- i
out2 <- i
}
}()
return out1, out2
}
// ReaderFromTube is the signature for a pipe function.
type ReaderFromTube func(inp <-chan io.ReaderFrom, out <-chan io.ReaderFrom)
// ReaderFromDaisy returns a channel to receive all inp after having passed thru tube.
func ReaderFromDaisy(inp <-chan io.ReaderFrom, tube ReaderFromTube) (out <-chan io.ReaderFrom) {
cha := make(chan io.ReaderFrom)
go tube(inp, cha)
return cha
}
// ReaderFromDaisyChain returns a channel to receive all inp after having passed thru all tubes.
func ReaderFromDaisyChain(inp <-chan io.ReaderFrom, tubes ...ReaderFromTube) (out <-chan io.ReaderFrom) {
cha := inp
for i := range tubes {
cha = ReaderFromDaisy(cha, tubes[i])
}
return cha
}
/*
func sendOneInto(snd chan<- int) {
defer close(snd)
snd <- 1 // send a 1
}
func sendTwoInto(snd chan<- int) {
defer close(snd)
snd <- 1 // send a 1
snd <- 2 // send a 2
}
var fun = func(left chan<- int, right <-chan int) { left <- 1 + <-right }
func main() {
leftmost := make(chan int)
right := daisyChain(leftmost, fun, 10000) // the chain - right to left!
go sendTwoInto(right)
fmt.Println(<-leftmost)
}
*/