tpl 007

right priority. ：）Fill function-sprintf 1. Decimal supplement 0 +[after the decimal point 0]Directly on the code:Echo sprintf ("%01.3f", 1);%01.3f means: a minimum of three digits after a decimal point is less than three 0, at least one before the decimal point, less than a zero of the floating-point number of the format behind the parametersRun result 1:1.000Conclusion On the complement of these several methods we can choose to use, in fact, each has the pros and cons,sprintf can e

"5xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans.xsd ">6 78 class= "Soundsystem.properties.BlankDisc"9p:title= "Sgt Pepper ' s Lonely Hearts Club Band"TenP:artist= "The Beatles" > One A - - the - - - + forThe benefit of Mr kite! - + A at - - - - - in - to class= "Soundsystem.properties.CDPlayer" +p:compactdisc-ref= "Compactdisc"/> - the3.util-namepsace123Xmlns:xsi= "Http://www.w3.org/2001/XMLSch

method in Sharp}/** * * @authorGavin * This is a square class that inherits Sharp*/classSquareextendssharp{Private DoubleSide = 0; Square (Doubleside) { This. Side =side; } Public DoubleArea () {//This method overrides the same name method in the parent class sharp returnside*side; } //Note that square inherits sharp, so Square has the Getlarger method in sharp. Public Static voidMain (string[] args) {Sharp a=NewCircle (2);//a parent class can have more than one s

unique to Forkeyword and has no semicolon.Of course. You can write the code like this: for (i = 2;i Let's actually debug and see how the code works.Detailed operations such as the following:Select the first line of the above code. Then choose Debug-New breakpoint-break at function for example to:Of course. You can also have a single left mouse button in front of the code line numberOr after the row is selected. Press the Ctrl+b button to create a breakpointAfter the breakpoint is set up,

input is a legitimate IP (rough judgment, the focus is on the application of the script)#!/bin/bashif [[$1 =~ ([0-9]+\.) {3} [0-9]+ ]] then"IP legal \ n" Else "IP not valid \ n" fi Ten, enter the starting value A and the last value B, calculate the sum from A + (a+1) ... + (B-1) +b[Email protected] ~/bash_script $CatSum100diy.SH #!/bin/Bashread-P"Please enter a two positive integer:"Goal1 Goal2sum=0if[[Goal1-GT Goal2]] ThenG1=Goal1 G2=Goal2ElseG1=Goal2 G2=Goal1fiuntil[[$g 1-le $g 2]] Do

First look at the source code, in the VS2010 environment can not be compiled through, in the VS2013 environment to compile through, and can run, but the results are not the results we expect.When the object C1 is initially defined by the Mycircle class, the object is allocated memory space,R is not initialized, its value is garbled,pi is 3.1415926,area garbled.The statement "CIN>>C1.R" is assigned a value of C1.R, assuming 10, and then performing "Coutsee that the execution of cout is from memor

One. OverviewWe often want a thread to wait for another thread to finish before it runs, and we can use the join () method to do this.The meaning of the join () method is to complete a thread waiting for another thread to finish running.Two. Test of the Join () methodThread thread =NewThread (NewRunnable () {@Override Public voidrun () { for(intx =0; X Ten; X + +) {System. out. println ("thread is running ..."); Try{TimeUnit.SECONDS.sleep (1); } Catch(interruptedexception e) {e.printstacktrace (

;ImportOrg.springframework.context.annotation.Bean;Importorg.springframework.context.annotation.Configuration;ImportCom.github.benmanes.caffeine.cache.CacheLoader; @Configuration Public classcacheloaderself {/*** This bean,refreshafterwrite=5s must be specified for this configuration property to take effect **/@Bean PublicCacheloaderCacheloader () {CacheloaderNewCacheloader() {@Override PublicObject load (Object key)throwsException {return NULL; } //override this method to return the

is the root of the time slice in the switch, but the time slice of the switch takes time.When switching time slices takes more time, the resources that were originally given to the program are switched by time slices.Use, then there is a problem with performance.The core of the performance problem is:Determine if concurrency, how much concurrency, and the amount of concurrent time are required.Four. Security issuesWhen multithreaded execution, there will be contention for resources, if the cont

Password=NewString (Utoken.getpassword ()); User User=Userdao.selectuserbyusername (username); if(User = =NULL) { Throw NewUnknownaccountexception ("account is not correct!"); } if(user.getlocked () = =boolean.true) {Throw NewLockedaccountexception ("account is locked!"); } //password CheckSimplehash hash =NewSimplehash ("MD5", username, User.getsalt (),1); if(!User.getpassword (). Equals (Hash.tostring ())) { Throw NewIncorrectcredentialsexception ("The pass

Import Pickle# ---Serialization of---用于对Python对象进行序列化和反序列化的二进制协议f =Open"Pickle.txt","wb+")Lists = [123,"Chinese", [456]]STRs ="String"num =123#WritePickle.dump (lists, f)# serialized to file Pickle.dump (STRs , F) Pickle.dump (Num # close F.close () #--- Deserialization --- F = open (, " rb+ ") # read data = Pickle.load (f) # print (data) data = Pickle.load (f) Span style= "COLOR: #8888c6" >print (data) data = Pickle.load (f) print (data) F.close () Python3-notes-e

")); New DateTime (); System.out.println (dt1.tostring ("Yyyy-mm-dd HH:mm:ss")); // London time New DateTime (Datetimezone.forid ("Europe/london")); System.out.println (dt2.tostring ("Yyyy-mm-dd HH:mm:ss"));8. Calculate intervals and intervalsDateTime begin =NewDateTime ("2015-02-01"); DateTime End=NewDateTime ("2016-05-01"); //Calculate interval Millisecond numberDuration d =NewDuration (begin, end); LongMillis =D.getmillis (); //Calculate interval DaysPeriod p =NewPeriod (begin, End, Peri

Calling a custom module = = = #coding =utf-8 # mymodule.py custom module def myfunction (): return " myFunction " # Avoid calling functions when you run the test code Span style= "COLOR: #cc7832" >if __name__ = = "__main__": Print (MyFunction ()) ==================================#Import the module and call(Three ways to import modules,Select one of the)Import time#First Kind,Introducing a single moduleImport timeAs T#Introduce and renameImport time, calendar#The second K

5007777 6666-1 0 2 300 3721-1-1 1 2333 2 1509012-1-1 3 1236 1235 1234 1 1001235 5678 9012 0 1 502222 1236 2468 2 6661 6662 1 3002333-1 3721 3 6661 6662 6663 1 100Sample output:38888 1 1.000 1000.0000001 15 0.600 100.0005551 4 0.750 100.000#include #include #include #include using namespace Std;struct QQ{Vectorint num;int area;BOOL Flag;QQ (){num=0;area=0;flag=0;}};struct WW{int id;int area;int HN;int num;};BOOL Gg (WW A,WW b){Double q= (double) a.area/(double) a.hn;Double w= (double) b.area/(do

name, that is, the associated query 4 pages, 5 SQL statements, 6 Java methods Grade module (one side) Student Module (multi-party)A class can have multiple students, which is the relationship established in the relational model diagramShould be one of the primary keys of a party acting as a foreign key to many PartiesFor example: Query student must be able to see grade information,But query grade don't have to see student information--------------------------------------------------------------

Label:If program A calls program B, and program B calls program A, when we start writing thisProgram code, we are calling a program that has not yet been seen by a compiled program.In this case (and in many cases there will be a similar situation), we can first declare aA function or program that declares the complete name and parameters, but does not provide complete program code.To do this, we just write the complete program or function name, and finally add aForward key Words can UnitUnit1;

In the past (about 2005), I wrote a post Parser for Tianya. Sometimes the format of the post is often changed, and the sections are different. At that time, I wanted to design a matching language, but I was helpless. The collector is widely used, so

First, when the break is called,There is no need to execute the iteration after the break is called in the loop.Because parallel execution breaks down the execution order, it is very likely that some iterations that do not need to be executed have

When you throw an exception in a task execution, for example: Task. Factory. startnew () => { Throw new exception (); }); Run this method and no exception is thrown.   In fact, at this time, the task exception is in the imperceptible state. This

The terrain you just created is a flat panel, which has a great impact on the visual effect. Select Terrain in Hierarchy, and the Inspector panel displays its attributes. Click the brush first, and then click Edit Textures Click add