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|
package util
import (
"iter"
"time"
)
func ParseDateTime(s string) (time.Time, error) {
dateFormats := []string{
"Jan _2, 2006",
"January 2, 2006",
"January 2 2006",
"Jan 2 2006",
"2006 January 2",
time.DateOnly,
time.DateTime,
time.Layout,
time.ANSIC,
time.UnixDate,
time.RubyDate,
time.RFC822,
time.RFC822Z,
time.RFC850,
time.RFC1123,
time.RFC1123Z,
time.RFC3339,
}
var t time.Time
var err error
for _, layout := range dateFormats {
if t, err = time.Parse(layout, s); err == nil {
return t, nil
}
}
return time.Time{}, err
}
// Create a copy of a slice with all values that satisfy cond
func Fitler[E any](s []E, cond func(e E) bool) []E {
filtered := make([]E, 0, len(s))
for _, e := range s {
if cond(e) {
filtered = append(filtered, e)
}
}
return filtered
}
// Create an iterator of index and element for all values in a slice which satisfy cond.
func FilterIter[E any](s []E, cond func(e E) bool) iter.Seq2[int, E] {
return func(yield func(int, E) bool) {
for i, e := range s {
if cond(e) {
if !yield(i, e) {
return
}
}
}
}
}
// FilterIter but backwards
func BackwardsFilterIter[E any](s []E, cond func(e E) bool) iter.Seq2[int, E] {
return func(yield func(int, E) bool) {
for i := len(s) - 1; i >= 0; i-- {
if cond(s[i]) {
if !yield(i, s[i]) {
return
}
}
}
}
}
|
