days

MySQL数据库TO_DAYS()函数的用法

天涯浪子 提交于 2019-12-10 20:06:54
TO_DAYS(date) 给定一个日期date, 返回一个天数 (从年份0开始的天数 )。 题目连接: to_days()函数的考察 答案: select w1.Id as ID from Weather w1,Weather w2 where TO_DAYS(w1.ReDate) - TO_DAYS(w2.ReDate) = 1 and w1.Temp>w2.Temp 来源: CSDN 作者: 厌离心 链接: https://blog.csdn.net/m0_37818215/article/details/103480995

Pandas: count some values in a column

南笙酒味 提交于 2019-12-07 23:56:11
问题 I have dataframe, it's part of them ID,"url","app_name","used_at","active_seconds","device_connection","device_os","device_type","device_usage" e990fae0f48b7daf52619b5ccbec61bc,"",Phone,2015-05-01 09:29:11,13,3g,android,smartphone,home e990fae0f48b7daf52619b5ccbec61bc,"",Phone,2015-05-01 09:33:00,3,unknown,android,smartphone,home e990fae0f48b7daf52619b5ccbec61bc,"",Phone,2015-06-01 09:33:07,1,unknown,android,smartphone,home e990fae0f48b7daf52619b5ccbec61bc,"",Phone,2015-06-01 09:34:30,5

Windbg程序调试--转载

萝らか妹 提交于 2019-12-07 23:15:23
WinDbg是微软发布的一款相当优秀的源码级(source-level)调试工具,可以用于Kernel模式调试和用户模式调试,还可以调试Dump文件。 WinDbg是微软很重要的诊断调试工具: 可以查看源代码、设置断点、查看变量, 查看调用堆栈及内存情况。  调试应用程序(用户模式 user mode)  调试操作系统及驱劢程序(内核模式 kernel mode)  调试非托管程序(native program)  调试托管程序(managed program)  实时调试 (JIT: Just in time)  事后调试 (postmortem debugging) 使用WinDbg可以解决线上.NET应用程序的如下问题: ◆ 内存高 ◆ CPU高 ◆ 程序异常 ◆ 程序Hang死 在生产环境下进行故障诊断时,为了不终止正在运行的服务或应用程序,有两种方式可以对正在运行的服务或应用程序的进程进行分析和调试。 一、用WinDbg等调试器直接attach到需要调试的进程,调试完毕之后再detach即可。但是这种方式有个缺点就是执行debugger命令时必须先break这个进程,执行完debug命令之后又得赶紧F5让他继续运 行,因为被你break住的时候意味着整个进程也已经被你挂起。另外也经常会由于First Chance Excetpion而自动break

3.7 Struts2综合应用实例的附件

南楼画角 提交于 2019-12-07 19:39:19
3.7 Struts2综合应用实例--添加学生信息 的附件 dojo_zh.js /* Copyright (c) 2004-2006, The Dojo Foundation All Rights Reserved. Licensed under the Academic Free License version 2.1 or above OR the modified BSD license. For more information on Dojo licensing, see: http://dojotoolkit.org/community/licensing.shtml */ dojo.provide("nls.dojo_zh");dojo.provide("dojo.i18n.calendar.nls.gregorian");dojo.i18n.calendar.nls.gregorian._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorian.zh");dojo.i18n.calendar.nls.gregorian.zh={"days-standAlone-narrow":["日","一","二","三","四","五","六"],"eras":["公元前","公元"],"am":"上午",

How to integrate :missed days with :committed days in habits.rb?

早过忘川 提交于 2019-12-07 09:09:29
How can we integrate t.integer :missed with t.text :committed so that when a User checks off he :missed 3 :committed days in a :level he has to restart the :level ? for each :missed day he checks off, an additional :committed day is added back into the :level so that he must make it up before advancing? Each habit has 5 levels before "Mastery" is achieved! class Habit < ActiveRecord::Base belongs_to :user before_save :set_level acts_as_taggable serialize :committed, Array def self.comitted_for_today today_name = Date::DAYNAMES[Date.today.wday].downcase ids = all.select { |h| h.committed

Scala : 2 days ago

走远了吗. 提交于 2019-12-06 19:36:19
2 days ago 可以是一行代码,如同java里(int i=0;)可以通过编译,太Cool了,如同一句日常用语,非常吸引人;这行代码是在《Programming Scala:multi...》7.5节"隐式类型转换"里看到的,书里ago好像用的是String类型的,缺乏美观,虽是本入门级的书,不过入门级却 不一定是写的很薄,可以做一些全面的介绍而不求讲的很深入; 于是自己就改编了一下: import java.text.SimpleDateFormat import java.util.{Calendar,Date} sealed abstract class Day abstract class Forward extends Day abstract class Backward extends Day case object ago extends Backward case object before extends Backward case object after extends Forward case object later extends Forward class DSL(x:Int){ def days(day:Day)={ var can=Calendar.getInstance def backward():Unit=can.set

subset data for a day if data between two hours of the day meets criteria?

Deadly 提交于 2019-12-06 16:56:37
I’m fairly new to R and it would be great if you could help out with this problem as i havent been able to find any answers to this problem online. This is part of my data frame (DF) (it goes on until 2008 in this format) Counter Date Hour counts 1245 26/05/2006 0 1 1245 26/05/2006 100 0 1245 26/05/2006 200 2 1245 26/05/2006 300 0 1245 26/05/2006 400 5 1245 26/05/2006 500 3 1245 26/05/2006 600 9 1245 26/05/2006 700 10 1245 26/05/2006 800 15 This is my question: I need to subset my code so that between the hours of 600 and 2200 if there are counts over 0 then I need to keep the whole day (000

php days between two dates list

与世无争的帅哥 提交于 2019-12-06 16:44:40
Do you know what the problem is by looking at the code? I would be happy if you helped me: list($from_day,$from_month,$from_year) = explode(".","27.09.2012"); list($until_day,$until_month,$until_year) = explode(".","31.10.2012"); $iDateFrom = mktime(0,0,0,$from_month,$from_day,$from_year); $iDateTo = mktime(0,0,0,$until_month,$until_day,$until_year); while ($iDateFrom <= $iDateTo) { print date('d.m.Y',$iDateFrom)."<br><br>"; $iDateFrom += 86400; } Date of writing the same problem 2 times October (31) for writing 2 times in history draws the ends October 30th: ( 27.09.2012 28.09.2012 ... 26.10

Convert dates to hours

☆樱花仙子☆ 提交于 2019-12-06 15:26:30
问题 I'm trying to work with dates for the first time, I did it something about that with Flash but it's different. I have two different dates and I'd like to see the difference in hours and days with them, I've found too many examples but not what I'm loking for: <?php $now_date = strtotime (date ('Y-m-d H:i:s')); // the current date $key_date = strtotime (date ("2009-11-21 14:08:42")); print date ($now_date - $key_date); // it returns an integer like 5813, 5814, 5815, etc... (I presume they are

Most efficient way to get the dates for the past 7 days?

六眼飞鱼酱① 提交于 2019-12-06 12:37:28
问题 I've got two functions which I can use to get the dates of the past 7 days and formats the into a particular format but it's pretty slow, does anybody know of a better way maybe using a loop or something similar? function formatDate(date){ var dd = date.getDate(); var mm = date.getMonth()+1; var yyyy = date.getFullYear(); if(dd<10) {dd='0'+dd} if(mm<10) {mm='0'+mm} date = mm+'/'+dd+'/'+yyyy; return date } function Last7Days () { var today = new Date(); var oneDayAgo = new Date(today); var