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[Uidevice currentdevice].batterymonitoringenabled = yes;double Devicelevel = [Uidevice currentDevice].batteryLevel;We usually use the above method to get the current remaining charge. This is also provided by Apple's official documentation.It returns a floating-point value between 0.00-1.00. In addition,-1.00 represents the simulator.Looks like this method is good, also very simple.But careful observation of its return value, we can find. It is with 0.05 homologous. Converted to 100%, that is,

Ogre collision detection, accurate to the object mesh Triangle Surface (19:14:27) Reprinted Tags:Miscellaneous Category: MSN migration The final project of our course is a three-dimensional game of mosquito-sucking blood. Because the volume of mosquitoes is small, and mosquitoes need to fly in 3D scenarios. Therefore, the regular model detection for the box is insufficient. For example, there is a desk lamp in the scenario. From

Determine whether the browser is closed or refreshed (ultra-accurate) based on JavaScript. The javascript Browser This article is a summary of some of the core content, I personally feel helpful to everyone, the specific content can be seen below: Only onload is executed when the page is loaded.When the page is closed, only onunload is executed.When the page is refreshed, execute onbeforeunload first, then onunload, and finally onload. After verificat

First, a problem is thrown:In the process of program development, when the front-end countdown function is used, the problem of obtaining the accurate time is encountered,Simple scenario:The front-end obtains the server time and performs the subtraction operation directly on the client (browser) on the new date.Problem: when the client machine time changes, the new date () time will also be changed at any time (the problem is big !!) The following are

properties and methods for accessing or processing a TimeSpan valueThe following list covers a subset of these:Add: Adds to another timespan value.Days: Returns the TimeSpan value that is calculated in day.Duration: Gets the absolute value of the timespan.Hours: Returns the TimeSpan value computed in hoursMilliseconds: Returns the TimeSpan value computed in milliseconds.Minutes: Returns the TimeSpan value computed in minutes.Negate: Returns the inverse number of the current instance.Seconds: Re

This article mainly introduces how to use native js to simulate jq to determine whether the current browser is ie, accurate to ie6 ~ 8. If you need it, you can refer to those who are familiar with jq and may occasionally use it to determine whether the current browser is ie or even the specific version of ie. For example, to determine that the current browser is ie7, the statement is as follows: If ($. browser. msie $. browser. version = 7) {//

struct timeval{ longint/ s number of the same time (NULL) return value long int // microsecond number 10 of 6 times };1 struct timezone{2 int tz_minuteswest; /* Time difference between GMT and West */ 3 int tz_dsttime; /* How to fix DST time */ 4 };1#include 2#include 3 4 intMain ()5 {6 structTimeval TV;7 structtimezone TZ;8 9 intres = Gettimeofday (AMP;TV, TZ);Tenprintf"res =%d\n", res); Oneprintf"tv.tv_sec =%ld, tv.tv_usec =%ld\n", A tv.tv_sec, tv.tv_usec); - -

This article will share with you the countdown code that is accurate to seconds in the javascript implementation used in personal projects. it is very practical and can be referenced by a small partner. The code is quite simple and practical, so there is not much nonsense here. you can understand it simply by looking at it. Remaining0Days0Hour0Minute0Seconds

Three steps1: Declaring variablesLarge_integer litmp;_int64 Qpart1,qpart2;Double Dfminus,dffreq, Dftim;QueryPerformanceFrequency (LITMP);2 Start timing at the beginning of the judging timeDffreq= (double) litmp. QuadPart;QueryPerformanceCounter (LITMP);Qpart1=litmp. QuadPart;3 Read run time at the end of the judging positionQueryPerformanceCounter (LITMP);Qpart2=litmp. QuadPart;Dfminus= (Double) (QPART2-QPART1);Dftim = dfminus/dffreq*1000;Show timeCString msg4= "Time:", msg3,msg5= "milliseconds"

8MHz:Frequency f = 8MHz = 8,000,000hzMachine Cycle Tm = f/F = 1/8mhz = 1/8usIn other words, the duration of a machine cycle (NOP) is 1/8us, so the delay of 1us is 8*TM, the same as above:#define DELAY_US (US) __delay_cycles (8* (US))#define Delay_ms (MS) __delay_cycles (8000* (MS))According to the macro definition method above, we define Cpu_clock as 32768, then:Frequency f = 32KHz = 32,768hzMachine Cycle Tm = f/f = 1/32768hz ~= 30.5usIt can be imagined that the minimum CPU instruction executio

determine whether the two connection map belongs to the same person. They hope to find out in the study whether the activity patterns of neurons are sufficient to identify individuals from the population. They used data from the Human connectivity Group program to record brain activity with functional magnetic resonance imaging (fMRI) techniques. Magnetic resonance imaging (FMRIis our best tool for studying the human brain, which can explore the human brain in a safe, non-invasive way. The rese

parameter that specifies the right-aligned output within the specified area.Setprecision () function: Setprecision (n) controls the output stream to display the number of floating-point numbers as N. C + + default stream output numeric value bit is 6CoutTogether, it means: output a right-aligned 1-bit floating-point number, that is, the function is to control the right side of the decimal digits.Resources:Setprecision () and Setiosflags () (c + + decimal to n-bit)　　Printf () Output format Contr

; Colum.push_back (dot); Link.addrow (N,colum); }Else{node dot; Dot.x=i;dot.y=J; for(intk=1; k9; k++) { if(hasr[i][k]==falsehasc[j][k]==false hasp[i/3*3+j/3][k]==false) {DOT.K=K; Colum.clear (); N++; Dot.c=i*9+j+1; Colum.push_back (dot); Dot.c=Bayi+i*9+K; Colum.push_back (dot); Dot.c=162+j*9+K; Colum.push_back (do

This article mainly describes how to determine whether the browser is closed or refreshed (ultra-accurate) based on JavaScript. if you need it, you can refer to the core content summarized in this article, I personally feel helpful to you. for details, refer to the following: Only onload is executed when the page is loaded.When the page is closed, only onunload is executed.When the page is refreshed, execute onbeforeunload first, then onunload, and f

Decexpress official website to provide Chinese customized package, url https://www.devexpress.com/Support/Center/Question/Details/A42112.1 Prior to the release of the Chinese version of the package download, a later version of the Support online select version and custom, the above URL of the Web Localization Serviceis the online editing page, but the first login, no account registration can be, after the Chinese good (Chinese Simplified is ZH-CN), will send a download hyperlink to your registe

I submitted the task assigned by my boss today, but the boss asked meAlgorithmOnly for the entireProgramDoes not calculate the running time of the core algorithm. I initially used the timegettime () function, which can only be accurate to ms. The usage is as follows: # Include Dowd begin, end; Begin = timegettime (); // The program fragment you want to calculate End = timegettime (); Cstring strtime;Strtime. Format ("% d", end-Start );

# Include # Include # Include /* Accurate to USEC */ Void Getusertime (){ Static Struct Timeval tpstart, tpend; Static Float Timeuse; Static Int Count = 0 ; Count ++ ; If (Count % 2 ) = 1 ) Gettimeofday ( Tpstart, null ); Else {Gettimeofday ( Tpend, null); timeuse = 1000000 * (Tpend. TV _sec-tpstart. TV _sec) + Tpend. TV _usec - Tpstart. TV _usec; timeuse /= 1000000 ; Printf ( " Count: % d used time: % F \ n " , Count, time

1PHP2 functionGetmonthnum ($date 1,$date 2,$tags= '-' ){3 $d 1=Explode($tags,$date 1); 4 $d 2=Explode($tags,$date 2);5 if(Strtotime($date 1) -Strtotime($date 2) > 0 ){6 $monthsFromYear=ABS($d 1[0]-$d 2[0]) * 12;7 $monthsFromMonth=$d 1[1]-$d 2[1];8 return $monthsFromYear+$monthsFromMonth;9}Else{Ten $monthsFromYear=ABS($d 2[0]-$d 1[0]) * 12; One $monthsFromMonth=$d 2[1]-$d 1[1]; A return $monthsFromYear+$monthsF

and host objects) have that property. In the specification, [[class]] is defined as:Internal Property Description[[Class]] A string value that indicates the type of the object.The process is simple: 1. Gets the class name (object type) of the object. 2. Then combine [object, acquired class name,] and return.Since everything in JavaScript is an object, no exception, applying the Object.prototype.toString.call () method to all value types results in the following:Console.log (Object.prototype.toS

"" "192.168.100.8 --[20/May/2015:16:17:14+0800] "get/images/icon_app_sq.pnghttp/1.0" 20635899192.168.100.8--[20/May/2015:16:17:14+0800] "get/images/ icon_app_sq.pnghttp/1.0 "200135899192.168.100.48--[20/may/2015:16:13:32 +0800] "get/apk/test/20001/test_20001.apkhttp/1.0" 2003245652192.168.100.48 --[20/May/2015:12:51:46+0800] "get/apk/test/20001/test_20001.apkhttp/ 1.0 "20665536" "" "F=open ('/backup/nginxlog/aggday/access.log. ') +curtime2) #p =re.compile (' ([0-9.] +) .*20/mar/2015:16:[0-2][0-