func (cache *IssueCacheFile) WriteIssueCache() error {
cache.File.Truncate(0)
cache.File.Seek(0, 0)
cache.Issues = functional.Filter(func(i *Issue) bool { return i != nil }, cache.Issues).([]*Issue)
err := json.NewEncoder(cache.File).Encode(cache.Issues)
logOnError(err)
return cache.File.Close()
}
func main() {
people := []Person{Person{Name: "Mary", Height: 160}, Person{Name: "Isla", Height: 80}, Person{Name: "Sam"}}
fmt.Println("People", people)
knowingHeight := f.Filter(func(person Person) bool {
return (person.Height > 0)
}, people).([]Person)
fmt.Println("Knowing height people", knowingHeight)
average := f.Reduce(func(a float32, person Person) float32 {
return a + (float32(person.Height) / float32(len(knowingHeight)))
}, people, float32(0)).(float32)
fmt.Println("Average height among people we know their height: ", average)
}
func SetupHook(path string, script string) {
bash := "#!/bin/bash"
lns, err := ReadFileLines(path)
logOnError(err)
if len(lns) == 0 {
lns = append(lns, bash)
}
//Filter existing script line
lns = functional.Filter(func(a string) bool { return a != script }, lns).([]string)
lns = append(lns, script)
logOnError(WriteFileLines(path, lns, true))
}
func main() {
words := []string{"doing", "go", "functional", "programming"}
numbers := []int{1, 2, 3}
fmt.Println("MAP")
fmt.Println("Square", numbers, f.Map(func(x int) int { return x * x }, numbers))
fmt.Println("Length", words, f.Map(func(x string) int { return len(x) }, words))
fmt.Println("Hash", words, f.Map(hash, words))
fmt.Println("REDUCE")
fmt.Println("Sum", numbers, f.Reduce(func(a int, x int) int { return a + x }, numbers, 0))
fmt.Println("Total length", words, f.Reduce(func(a int, x string) int { return a + len(x) }, words, 0))
fmt.Println("FILTER")
fmt.Println("Long words (>5)", words, f.Filter(func(x string) bool { return (len(x) > 5) }, words).([]string))
}