[B! datetime] kiyo_hikoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

kiyo_hiko id:kiyo_hiko

datetimeã«é–¢ã™ã‚‹kiyo_hikoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (11)

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Rubyã¨Railsã«ãŠã‘ã‚‹Time, Date, DateTime, TimeWithZoneã®é•ã„ - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? 2021.2.11è¿½è¨˜ï¼šDateTimeã‚¯ãƒ©ã‚¹ã¯éžæŽ¨å¥¨ãªã‚¯ãƒ©ã‚¹ã«ãªã‚Šã¾ã—ãŸ DateTimeã‚¯ãƒ©ã‚¹ã¯éžæŽ¨å¥¨ãªã‚¯ãƒ©ã‚¹ã¨ãªã‚Šã€DateTimeã‚¯ãƒ©ã‚¹ã§ã¯ãªãTimeã‚¯ãƒ©ã‚¹ã‚’ä½¿ã†ã‚ˆã†ã€å…¬å¼ã«ã‚¢ãƒŠã‚¦ãƒ³ã‚¹ã•ã‚Œã¾ã—ãŸã€‚ å‚è€ƒ1 But we consider use of DateTime should be discouraged. - matz (Yukihiro Matsumoto) https://bugs.ruby-lang.org/issues/15712#note-4 å‚è€ƒ2 DateTime ã¯ deprecated ã¨ã•ã‚Œã¦ã„ã‚‹ãŸ
kiyo_hiko 2016/04/19
ruby

rails

date

datetime

time
ãƒªãƒ³ã‚¯
DateTime ã«æœˆã€æ—¥ã€æ™‚ã€åˆ†ã€ç§’ã‚’è¶³ã™ã€‚ - ã“ã›ãã®æŠ€è¡“æ—¥è¨˜
DateTimeã«ç§’ã‚’è¶³ã™æ–¹æ³•ãŒãªã‹ãªã‹è¦‹ã¤ã‹ã‚‰ãªãã¦è‹¦åŠ´ã—ãŸã€‚çµå±€ActiveSupportã®ã‚½ãƒ¼ã‚¹ã‹ã‚‰æŽ¢ã—ãŸã€‚ Rationalã‚’è¶³ã›ã°è‰¯ã„ã€‚ require 'date' t = DateTime.now # 1ãƒ¶æœˆå¾Œ t >> 1 # 1æ—¥å¾Œ t + 1 # 1æ™‚é–“å¾Œ (1/24æ—¥å¾Œ) t + Rational(1, 24) # 1åˆ†å¾Œ (1/1440æ—¥å¾Œ) t + Rational(1, 24 * 60) # 1ç§’å¾Œ (1/86400æ—¥å¾Œ) t + Rational(1, 24 * 60 * 60) ç§’ã‚’è¶³ã™ã“ã¨ã°ã‹ã‚Šè€ƒãˆã¦ãŸã‘ã©ã€ã€ŒRuby DateTime æ™‚é–“ã€ã§æ¤œç´¢ã—ãŸã‚‰ã‚ã£ã•ã‚Šè¦‹ã¤ã‹ã£ãŸã€‚ http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/44399 ã§ã‚‚ãƒžãƒ‹ãƒ¥ã‚¢ãƒ«ã«ã‚‚æ›¸ã„ã¨ã„ã¦ã»ã—ã„ã§ã™ã€‚ã„ã£ãºã‚“T
kiyo_hiko 2015/11/26
>> 1ã§æœˆå˜ä½+1ã§æ—¥å˜ä½ã®åŠ ç®—ã€æ™‚åˆ†ç§’ã¯Rationalã¨ã„ã†è©±

ruby

datetime

operator

overload

api

rational
ãƒªãƒ³ã‚¯
ASP.NET MVC datetime culture issue when passing value back to controller
kiyo_hiko 2015/08/11
è‹¥å¹²é•ã†ã‘ã©ã€"ï¼ Html.EditorFor(m => m.Date, "yyyyå¹´Mæœˆdæ—¥ï¼ˆdddï¼‰", new { htmlAttr..." ãŒãƒ¢ãƒ‡ãƒ«ã«ãƒã‚¤ãƒ³ãƒ‰ã™ã‚‹ã¨ãã«ParseExactçš„ãªäº‹ã•ã‚Œãšnullã«è©•ä¾¡ã•ã‚Œã‚‹ç¾è±¡ã‚’ã‚°ã‚°ã£ãŸã‚‰æ¥ãŸã€‚ãªãŠ"yyyyå¹´Mæœˆdæ—¥ (ddd)"ã«å¤‰ãˆãŸã‚‰è§£æ±ºã—ãŸã€‚

asp

dotnet

mvc

datetime

null

problem
ãƒªãƒ³ã‚¯
Set hidden field using HTML Helper to Date Time Now
kiyo_hiko 2015/08/11
ï¼ Html.HiddenFor(m => m.SomeTime, new { ï¼ value=DateTime.Now })

asp

dotnet

mvc

hidden

form

datetime
ãƒªãƒ³ã‚¯
ASP.NET MVC - TextBoxFor ã§ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆæŒ‡å®š - ã„ã¡ã‚ã
ã™ã£ã”ã„ä»Šé ƒæ°—ã¥ã„ãŸã‚“ã§ã™ãŒã€ASP.NET MVC 4 ã‹ã‚‰ TextBoxFor ãƒ¡ã‚½ãƒƒãƒ‰ã§ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆï¼ˆæ›¸å¼ï¼‰ã‚’æŒ‡å®šã§ãã‚‹ã‚“ã§ã™ãã€‚çŸ¥ã‚‰ãªã‹ã£ãŸãƒ»ãƒ»ãƒ»ã€‚ TextBoxFor ãƒ¡ã‚½ãƒƒãƒ‰ã®ã‚ªãƒ¼ãƒãƒ¼ãƒãƒ¼ãƒ‰ã¯6ã¤ã‚ã£ã¦ã€ãã®ã†ã¡ã®ä¸‹3ã¤ã¯å¼•æ•°ã« format ãŒã‚ã‚Šã¾ã™ã€‚ InputExtensions.TextBoxFor ãƒ¡ã‚½ãƒƒãƒ‰ (System.Web.Mvc.Html) ä¾‹ãˆã°ã“ã‚Œã¨ã‹ã€‚ InputExtensions.TextBoxFor(TModel, TProperty) ãƒ¡ã‚½ãƒƒãƒ‰ (HtmlHelper(TModel), Expression(Func(TModel, TProperty)), String) (System.Web.Mvc.Html) å®Ÿéš›ã«ä½¿ã£ã¦ã¿ã‚‹ã¨ã“ã‚“ãªæ„Ÿã˜ã§ã™ã€‚ï¼ˆã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ©ã¯ç«¯æŠ˜ã£ã¦ã¾ã™ã€‚ï¼‰ ãƒ¢ãƒ‡ãƒ« public class Sample { p
kiyo_hiko 2015/08/07
asp

dotnet

datetime

format
ãƒªãƒ³ã‚¯
DateTime.ParseExactã«ã¤ã„ã¦ãƒãƒžã£ã¦ãŠã‚Šã¾ã™ - OKWAVE
DateTime.ParseExactã«ã¤ã„ã¦ãƒãƒžã£ã¦ãŠã‚Šã¾ã™ã€‚ VB2010ç’°å¢ƒã«ã¦DateTime.ParseExactã®è³ªå•ã‚’ã•ã›ã¦ãã ã•ã„ã€‚ http://www.atmarkit.co.jp/fdotnet/dotnettips/203dateparse/dateparse.html ã“ã¡ã‚‰ã®ãƒšãƒ¼ã‚¸ã‚’å‚è€ƒã—ã¦DateTime.ParseExactã®ä½¿ã„æ–¹ã‚’ç·´ç¿’ã—ã¦ãŠã‚Šã¾ã™ã€‚ ã“ã®ï¼’ã¤ã«ã¤ã„ã¦ã¯å¸Œæœ›é€šã‚Šå‡ºåŠ›ã•ã‚Œã¾ã—ãŸã€‚ Dim d, f As String Dim dt As DateTime d = "20040824202306" f = "yyyyMMddHHmmss" dt = DateTime.ParseExact(d, f, Nothing) d = "2004å¹´08æœˆ24æ—¥20æ™‚23åˆ†06ç§’" f = "yyyyå¹´MMæœˆddæ—¥HHæ™‚mmåˆ†ssç§’" dt = DateT
kiyo_hiko 2015/07/28
cs

datetime

strptime
ãƒªãƒ³ã‚¯
æ—¥ä»˜ã‚„æ™‚åˆ»ã®æ–‡å—åˆ—ã‚’DateTimeï¼DateTimeOffsetã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«å¤‰æ›ã™ã‚‹ã«ã¯ï¼Ÿ
æœ¬ç¨¿ã¯2004/09/03ã«åˆç‰ˆå…¬é–‹ã—ãŸè¨˜äº‹ã‚’æ”¹è¨‚ã—ã€Visual Studio 2017ã§ã‚³ãƒ¼ãƒ‰ã®å‹•ä½œæ¤œè¨¼ã€DateTimeOffsetæ§‹é€ ä½“ã«ã¤ã„ã¦è¿½è¨˜ã€å›³ç‰ˆã®è¿½åŠ ã€å…¨èˆ¬çš„ãªæ§‹æˆã®å¤‰æ›´ãªã©ã‚’è¡Œã£ãŸã‚‚ã®ã§ã™ã€‚ ã€ŒTIPSï¼šæ—¥ä»˜ã‚„æ™‚åˆ»ã‚’æ–‡å—åˆ—ã«å¤‰æ›ã™ã‚‹ã«ã¯ï¼Ÿã€ã§ã¯ã€DateTimeæ§‹é€ ä½“ï¼ˆSystemåå‰ç©ºé–“ï¼‰ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ã€ã‚«ã‚¹ã‚¿ãƒ æ›¸å¼æŒ‡å®šã«ã‚ˆã‚Šç‹¬è‡ªã®å½¢å¼ã®æ–‡å—åˆ—ã«å¤‰æ›ã™ã‚‹æ–¹æ³•ã«ã¤ã„ã¦ç¤ºã—ãŸã€‚ æœ¬ç¨¿ã§ã¯ã€ã“ã‚Œã¨ã¯é€†ã«ã€ç‹¬è‡ªå½¢å¼ã®æ—¥ä»˜ã‚„æ™‚åˆ»ã®æ–‡å—åˆ—ã‚’DateTimeã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«å¤‰æ›ã™ã‚‹æ–¹æ³•ã«ã¤ã„ã¦ç¤ºã™ã€‚ãªãŠã€æœ¬ç¨¿ã®å¤§éƒ¨åˆ†ã§æ‰±ã†æ–‡å—åˆ—ã¯ã€ãã®å½¢å¼ãŒå®Œå…¨ã«å›ºå®šã•ã‚ŒãŸã‚‚ã®ã®ã¿ã‚’æƒ³å®šã—ã¦ã„ã‚‹ï¼ˆä¾‹ãˆã°ã€Œ2018/08/24 20:23:06ã€ã‚„ã€Œ201808242123ã€ãªã©ï¼‰ã€‚
kiyo_hiko 2015/07/27
PHPã®strptimeã®ã‚ˆã†ãªã‚‚ã®ã€€DateTime.ParseExact(String s, String format, IFormatProvider)

cs

strptime

parse

datetime
ãƒªãƒ³ã‚¯
How get list of datetimes from date range?
kiyo_hiko 2015/07/22
BAã‚’é–¢æ•°åŒ–ã—ãŸ â†’ public List<DateTime> Term(DateTime from, DateTime to){TimeSpan ts = to - from;var days = new List<DateTime>();for (int i = 0; i <= ts.Days; i++){days.Add(from.AddDays(i));}return days;} // ã¨ã“ã‚ã§Lispã®loopã‹iotaï¼‹mapcarã¿ãŸãä¸€ç™ºã§æ›¸ã‘ã‚‹æ–¹æ³•ãªã„ã‹ãª

cs

datetime

tips

range
ãƒªãƒ³ã‚¯
æ—¥æ™‚ï¼ˆDateTimeã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆï¼‰ã‚’æ–‡å—åˆ—ã«å¤‰æ›ã™ã‚‹
Dim dt As DateTime = New DateTime(2002, 5, 12, 20, 30, 15, 123) Console.WriteLine("ToString :{0}", dt.ToString()) '2002/05/12 20:30:15 Console.WriteLine("ToShortDateString :{0}", dt.ToShortDateString()) '2002/05/12 Console.WriteLine("ToLongDateString :{0}", dt.ToLongDateString()) '2002å¹´5æœˆ12æ—¥ Console.WriteLine("ToShortTimeString :{0}", dt.ToShortTimeString()) '20:30 Console.WriteLine("ToLongTimeStr
kiyo_hiko 2015/07/16
strftimeç›¸å½“â†’d.ToString("yyyyå¹´Mæœˆdæ—¥(ddd)")ã€strptimeç›¸å½“â†’DateTime.ParseExact("2015-å¹´7æœˆ16æ—¥ï¼ˆæœ¨ï¼‰", "yyyyå¹´Mæœˆdæ—¥ï¼ˆdddï¼‰", null)ã€‚æ›œæ—¥ã®çœç•¥è¡¨è¨˜ã¯dddã€å®Œå…¨è¡¨è¨˜ã¯dddd

cs

datetime

string
ãƒªãƒ³ã‚¯
C# - ç¾åœ¨ã®æ—¥ä»˜ã¨æ™‚åˆ»ã‚’å–å¾—ã™ã‚‹
C# å…¨èˆ¬ // ç¾åœ¨ã®æ—¥ä»˜ã¨æ™‚åˆ»ã‚’å–å¾—ã™ã‚‹ DateTime dtNow = DateTime.Now; // å–å¾—ã—ãŸæ—¥ä»˜ã¨æ™‚åˆ»ã‚’è¡¨ç¤ºã™ã‚‹ MessageBox.Show(dtNow.ToString());
kiyo_hiko 2015/07/08
DateTime d = DateTime.Nowã€UtcNowã‚‰ã—ã„

utc

cs

datetime
ãƒªãƒ³ã‚¯
næ—¥å¾Œã€nã‚«æœˆå¾Œã€nå¹´å¾Œã®æ—¥ä»˜ã‚’æ±‚ã‚ã‚‹ã«ã¯ï¼Ÿï¼»C#ã€VBï¼½
é€£è¼‰ç›®æ¬¡ .NET Frameworkã§ã¯ã€ç‰¹å®šã®æ—¥ä»˜ã¯DateTimeæ§‹é€ ä½“ï¼ˆSystemåå‰ç©ºé–“ï¼‰ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã¨ã—ã¦è¡¨ã™ã“ã¨ãŒã§ãã‚‹ãŒã€ãã®æ—¥ä»˜ã‹ã‚‰ã€æŒ‡å®šã—ãŸæ—¥æ•°ã€æœˆæ•°ã€å¹´æ•°ãŒçµŒéŽã—ãŸã¨ãã®æ—¥ä»˜ã¯DateTimeæ§‹é€ ä½“ã®ä»¥ä¸‹ã®3ã¤ã®ãƒ¡ã‚½ãƒƒãƒ‰ã§æ±‚ã‚ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ næ—¥å¾Œã®æ—¥ä»˜ã€€ï¼šã€€AddDays(n) nã‚«æœˆå¾Œã®æ—¥ä»˜ã€€ï¼šã€€AddMonths(n) nå¹´å¾Œã®æ—¥ä»˜ã€€ï¼šã€€AddYears(n) ã“ã‚Œã‚‰ã®ãƒ¡ã‚½ãƒƒãƒ‰ã¯æ—¥ä»˜ã«å¯¾ã—ã¦æ—¥ã€æœˆã€å¹´ã®åŠ ç®—ã‚’è¡Œã†ãŒã€æ¸›ç®—ã‚’è¡Œã†ãŸã‚ã®ãƒ¡ã‚½ãƒƒãƒ‰ã¯ç”¨æ„ã•ã‚Œã¦ã„ãªã„ã€‚ã“ã®ãŸã‚ã€næ—¥å‰ã€nã‚«æœˆå‰ã€nå¹´å‰ã®æ—¥ä»˜ã‚’æ±‚ã‚ã‚‹ã«ã¯ã€ã“ã‚Œã‚‰ã®ãƒ¡ã‚½ãƒƒãƒ‰ã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã§è² ã®æ•°ã‚’æŒ‡å®šã—ã¦è¡Œã†ã€‚ ä»¥ä¸‹ã«ã€ã“ã‚Œã‚‰ã®ãƒ¡ã‚½ãƒƒãƒ‰ã‚’åˆ©ç”¨ã—ãŸã‚µãƒ³ãƒ—ãƒ«ãƒ»ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ç¤ºã™ã€‚ // adddays.cs using System; class AddDaysMonthsYears { static voi
kiyo_hiko 2015/07/08
DateTimeåž‹ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ãƒ¡ã‚½ãƒƒãƒ‰AddDaysã€AddMonthsã€AddYearsä½¿ã†ã‚‰ã—ã„ã€‚AddMonthsã¯ä»ŠæœˆãŒå¤§ã®æœˆæœ«ã§ã‚ã‚Œã°æ¥æœˆã¯30ã¨ã‹28è¿”ã™ã‚‰ã—ã„

cs

datetime

type
ãƒªãƒ³ã‚¯
1