| |
|
|
|
|
|
|
|
|
|
|
|
| 経過時間 |
|
|
s = Timer()
〜
e = Timer()
t = e - s '秒 |
s = Timer()
〜
e = Timer()
t = e - s '秒 |
time_t s = time(NULL);
〜
time_t e = time(NULL);
time_t t = e - s; //秒 |
DWORD s = GetTickCount();
〜
DWORD e = GetTickCount();
DWORD t = e - s; //ミリ秒
timeBeginPeriod(1);
DWORD s = timeGetTime();
〜
DWORD e = timeGetTime();
timeEndPeriod(1);
DWORD t = e - s; //ミリ秒
LARGE_INTEGER s,e,f;
QueryPerformanceFrequency(&f);
QueryPerformanceCounter(&s);
〜
QueryPerformanceCounter(&e);
DWORD t=(DWORD)((e-s)/f); //マイクロ秒 |
long s = System.currentTimeMillis();
〜
long e = System.currentTimeMillis();
lont t = e - s; //ミリ秒
long s = System.nanoTime();
〜
long e = System.nanoTime();
lont t = e - s; //ナノ秒
JDK1.5以降 |
long s = System.currentTimeMillis();
〜
long e = System.currentTimeMillis();
lont t = e - s; //ミリ秒
long s = System.nanoTime();
〜
long e = System.nanoTime();
lont t = e - s; //ナノ秒 |
var s = new Date().getTime();
〜
var e = new Date().getTime();
var t = e - s; //ミリ秒 |
int s = Environment.TickCount;
〜
int e = Environment.TickCount;
int t = e - s; //ミリ秒 |
|
| 準備 |
|
|
|
|
#include <time.h> |
#include <winbase.h> |
import java.util.*; |
import java.time.*; |
|
|
|
| 現在日時 |
date
echo %DATE%
time
echo %TIME% |
date |
Now
Date
Date$
Time
Time$ |
Now
Date
Time |
struct timeval tv;
struct timezone tz;
struct tm now;
if (gettimeofday(&tv, &tz) < 0) { //現在日時
perror("gettimeofday");
}
if (localtime_r(&tv.tv_sec, &now) == NULL) { //地域時間
perror("localtime_r");
} |
SYSTEMTIME now;
GetLocalTime(&now); |
Calendar now = Calendar.getInstance();
Date now = new java.util.Date(); |
ZonedDateTime now = ZonedDateTime.now(); |
var now = new Date(); |
//DateTime today = DateTime.Today;
DateTime now = DateTime.Now;
|
sysdate
systimestamp |
| 日時作成 |
|
|
CDate(year & "/" & month & "/" & day & " " & hour
& ":" & min & ":" & sec)
#2008/1/14 12:34:56# |
|
struct tm date = { 0 };
date.tm_year = year - 1900;
date.tm_mon = month - 1;
date.tm_mday = day;
date.tm_hour = hour;
date.tm_min = min;
date.tm_sec = sec; |
SYSTEMTIME date = { 0 };
date.wYear = year;
date.wMonth = month;
date.wDay = day;
date.wHour = hour;
date.wMinute = min;
date.wSecond = sec;
date.wMilliseconds = msec; |
Calendar cal = Calendar.getInstance();
cal.set(year, month - 1, day, hour, min, sec);
cal.set(Calendar.MILLISECOND, msec);
java.util.Date date = 〜;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
//date = cal.getTime(); |
ZonedDateTime date =
ZonedDateTime.of(year, month, day, hour, min, sec, nanoSec,
ZoneId.systemDefault()); |
var date = new Date(year, month - 1, day, hour,
min, sec, msec);
引数は途中から省略可 |
DateTime date = new DateTime(year, month, day,
hour, min, sec); |
|
| 加算 |
|
|
DateAdd("書式",値,日時) |
DateAdd("書式",値,日時) |
|
|
cal.add(Calendar.YEAR, 1) |
date.plusYears(1)
date.plus(1, ChronoUnit.YEARS) |
|
|
日時 + 値
add_months(日時, 値) |
| 差 |
|
|
DateDiff("書式",日時,日時) |
DateDiff("書式",日時,日時) |
|
|
|
dt1.until(dt2, ChronoUnit.DAYS) |
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
| 判断 |
|
|
IsDate("文字列") |
|
|
|
DateFormat df = new SimpleDateFormat("書式");
df.parse("文字列", new ParsePosition(0)) != null |
|
|
|
|
| 文字列変換 |
|
|
CDate("文字列") |
|
struct tm date;
strptime("文字列", "書式", &date); |
|
Date date = new java.util.Date("文字列"); //非推奨
DateFormat df = new SimpleDateFormat("書式");
Date date = df.parse("文字列"); |
DateTimeFormatter df = DateTimeFormatter.ofPattern("書式");
ZonedDateTime date = ZonedDateTime.parse("文字列", df); |
var date = new Date("文字列"); |
DateTime date = DateTime.Parse("文字列");
DateTime date = DateTime.ParseExact("文字列","書式",null); |
to_date('文字列')
to_date('文字列', '書式')
to_timestamp('文字列', '書式') |
| |
date '+書式' |
CStr(date)
Format(date,"書式") |
|
char buf[256];
strftime(buf, sizeof(buf), "書式", &date); |
|
DateFormat df = new SimpleDateFormat("書式");
String buf = df.format(date); |
DateTimeFormatter df = DateTimeFormatter.ofPattern("書式");
String buf = date.format(df); |
var buf = date.toLocaleString();
var buf = date.toString(); |
String buf = date.ToString("書式"); |
to_char(date, '書式')
書式は小文字も可 |
| 日付書式 |
|
%Y |
yyyy |
|
%Y |
|
yyyy |
yyyy |
|
yyyy |
YYYY |
| |
%y |
yy |
|
%y |
|
yy |
yy |
|
yy |
YY |
| |
%m |
mm |
|
%m |
|
MM |
MM |
|
MM |
MM |
| |
%d |
dd |
|
%d |
|
dd |
dd |
|
dd |
DD |
| |
%H |
hh |
|
%H |
|
HH |
HH |
|
HH |
HH24 |
| |
%M |
nn
mm …hhの直後のみ |
|
%M |
|
mm |
mm |
|
mm |
MI |
| |
%S |
ss |
|
%S |
|
ss |
ss |
|
ss |
SS |
| |
|
|
|
|
|
SSS |
SSS |
|
fff |
FF3
…timestamp型のみ |
| 年 |
%DATE:~0,4% |
|
Year(日時) |
Year(日付) |
date.tm_year + 1900 |
date.wYear |
cal.get(Calendar.YEAR) |
date.getYear() |
date.getFullYear() |
date.Year |
|
| 月 |
%DATE:~5,2% |
|
Month(日時) |
Month(日付) |
date.tm_mon + 1 |
date.wMonth |
cal.get(Calendar.MONTH) + 1 |
date.getMonthValue()
Month month = date.getMonth(); |
date.getMonth() + 1 |
date.Month |
|
| 日 |
%DATE:~8,2% |
|
Day(日時) |
Day(日付) |
date.tm_mday |
date.wDay |
cal.get(Calendar.DATE) |
date.getDayOfMonth() |
date.getDate() |
date.Day |
|
| 時 |
%TIME:~0,2% |
|
Hour(日時) |
Hour(時刻) |
date.tm_hour |
date.wHour |
cal.get(Calendar.HOUR_OF_DAY) |
date.getHour() |
date.getHours() |
date.Hour |
|
| 分 |
%TIME:~3,2% |
|
Minute(日時) |
Minute(時刻) |
date.tm_min |
date.wMinute |
cal.get(Calendar.MINUTE) |
date.getMinute() |
date.getMinutes() |
date.Minute |
|
| 秒 |
%TIME:~6,2% |
|
Second(日時) |
Second(時刻) |
date.tm_sec |
date.wSecond |
cal.get(Calendar.SECOND) |
date.getSecond() |
date.getSeconds() |
date.Second |
|
| ミリ秒 |
%TIME:~9,2%0 |
|
|
|
tv.tv_usec / 1000 |
date.wMilliseconds |
cal.get(Calendar.MILLISECOND) |
date.getNano() / 1000_000 |
date.getMilliseconds() |
date.Millisecond |
|