Find a foreign code, specifically to test this,string+String.ConcatString.FormatStringBuilderThe first three are about 100 characters in the same string,String.Concat will get a little bit better performance improvements,String.Format will make it easier for you to use.StringBuilder more suitable for more and longer string stitching,If there are other insights, please also guide.usingSystem;usingSystem.Diagnostics;usingSystem.Text;namespacecompareinstructionexecutionspeed{ Public Delegate voidCo
of contract, this multiple will be slightly lower; if the contract definition contains more attributes to be serialized, the multiples will continue to increase. In any case, this ratio is very scary, so in high-frequency communication systems, compared to using the. NET built-in serializer, using compactpropertyserializer can save a lot of bandwidth. (2) test performance: We run two serialization 1 million times respectively, depending on the desired time: Beginsendfilecontract Contract
. QQWryLocator ("qqwry. dat"); // initialize the database file and obtain the number of IP records, which can be obtained through Count
QQWry. NET. IPLocation ip = qqWry. Query ("120.67.217.7"); // Query an ip address
Console. WriteLine ("{0} {1} {2}", ip. IP, ip. Country, ip. Local );
The following is the performance comparison code with IPLocation. dll:Copy codeThe Code is as follows: Stopwatch stopwatch
Stopwatch:marshalbyrefobject
{
DateTime mark = DateTime.Now;
public void Start ()
{
Mark = DateTime.Now;
}
public int Stop ()
{
return (int) (Datetime.now-mark). TotalMilliseconds);
}
}
StopwatchServer.cs
Using System;
Using System.Runtime.Remoting;
Using System.Runtime.Remoting.Channels;
Using SYSTEM.RUNTIME.REMOTING.CHANNELS.TCP;
Class MYAPP
{
static void Main ()
{
TcpServerChannel channel = new TcpServerChannel (1234);
ChannelServices.RegisterChannel (channel);
Remotingconfiguration.regis
namespaces: System.DiagnosticsStopwatch Instances can measure the elapsed time of a single time interval, or they can measure the total elapsed time of multiple time intervals. In a typical Stopwatch scenario, call the start method, then call the Stop method, and finally use the Elapsed property to check the run time.The Stopwatch instance is either running or stopped, and isrunning can be used to determine
the database file and obtain the number of IP records, which can be obtained through countQqwry. net.IplocationIP = qqwry. Query ("120.67.217.7");// Query an IP addressConsole. Writeline ("{0} {1} {2 }", IP. IP, IP. Country, IP. Local );
The following is the performance comparison code with iplocation. dll:
1: stopwatch = New stopwatch ();
2: List string IPS = New List string >{" 120.67.2
:
QQWry.NET.QQWryLocator Qqwry = new QQWry.NET.QQWryLocator ("Qqwry.dat")//initializes the database file and obtains the number of IP records, which can be obtained by count
QQWry.NET.IPLocation IP = qqwry.query ("120.67.217.7"); Querying an IP address
Console.WriteLine (' {0} {1} {2} ', IP. IP, IP. Country, IP. local);
The following is the performance comparison code with IPLocation.dll:
Copy Code code as follows:
Stopwat
links2
# yum install links2
3. lynx
Lynx is a text-based web browser released using the GNU GPLv2 protocol and written in iso c. Lynx is a highly configurable web browser, and is the savior of many system administrators. It has a long history and is still under active development.
Run the following command to install lynx.
# apt-get install lynx
# yum install lynx
After the installation is complete, you can use this command to browse the Web page as in.
# lynx www.tecmint.com
If you w
namespaces: System.DiagnosticsStopwatch Instances can measure the elapsed time of a single time interval, or they can measure the total elapsed time of multiple time intervals. In a typical Stopwatch scenario, call the start method, then call the Stop method, and finally use the Elapsed property to check the run time.The Stopwatch instance is either running or stopped, and isrunning can be used to determine
return statement in which the operand has type TResult.">If your method has a return statement with an operand of type TResult, it is task
Task if your method has no return statement or has a return statement with no operand.">If your method does not return a statement or has a return statement with no operands, it is a Task.
Sub in Visual Basic) if you‘re writing an async event handler.">If you are writing an asynchronous event handler, it is Void (a Sub in Visual Basic).
For more i
. QQWryLocator ("qqwry. dat"); // initialize the database file and obtain the number of IP records, which can be obtained through CountQQWry. NET. IPLocation ip = qqWry. Query ("120.67.217.7"); // Query an ip addressConsole. WriteLine ("{0} {1} {2}", ip. IP, ip. Country, ip. Local );The following is the performance comparison code with IPLocation. dll:Copy codeThe Code is as follows:Stopwatch stopwatch = new Stopw
address: http://delphi.xcjc.net/viewthread.php? Tid = 1570If it is true, the results of the API may not be accurate. 5. Use the. NET system. Diagnostics. Stopwatch class
Recommendation
In the Basic timer mechanism, stopwatch counts the timer scale to measure the running time. If the installed hardware and operating system support high-resolution performance counters, the
:
Synchronous Logon: Like discuz, you can log on to other applications synchronously when logging on to an application. The disadvantage is that, after logging on, it is best to wait several seconds to redirect so that other applications can have enough time to write cookies, but I don't like the "wait a few seconds" method.
Using jsonp: although I know how to use jsonp for cross-origin requests, it is difficult to implement it and there is a security problem if it is not well handled.
Do y
"After the acquisition of YouTube, Google plans to do something in China this year." "For a lot of domestic video sites, this simple to no more simple news means that the pace of spring is coming, but only" look beautiful "it?
Just passed the "first year of micro-video" in China, according to incomplete statistics, by the end of 2006, the number of domestic video sites have more than 150, video search market size also has 23 million yuan, and 2007 thi
C # Run Time of the test code,
You can use the following methods to accurately record the time consumed by code execution.
System. diagnostics. stopwatch stopwatch = new Stopwatch (); stopwatch. start (); // Start to monitor the code running time // you code .... stopwatch
. We can perform a simple performance test. Take a 8000*7000 TIF image, which is generally larger than MB. Call Method 7 with different parameters. The following result is displayed.
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
1
{
2
Stopwatch watch
=
New
Stopwatch ();
3
Watch. Start ();
4
Filestream FS
=
New
Filestream
ArticleDirectory
References:
In the previous article "gethashcode", I implemented a new skyiv. Numeric. biginteger. gethashcode method:
Public override intGethashcode (){IntN = sign;For(IntI = data. Length-1; I> = 0; I-= 4 ){IntM = data [I];If(I> 0) M | = (data [I-1] If(I> 1) M | = (data [I-2] If(I> 2) M | = (data [I-3] ReturnN * 0x5d588b65 ;}
the Code is elegant, but the If statements in the blue "> for loop can actually mention for outside the loop, as shown below:
... 104. Stopwatch function Design ... 135, the fixed-point timekeeping function design ... 146. Alarm Clock function design ... 157, Perpetual calendar query function: ... 168. Display function Design ... 19Five, experience ... 212, pre-preparation 1, a number of knowledge of the review of electricityRelated knowledge of gate circuit, counter, trigger, 555 trigger and Karnaugh map. 2, Multisim related knowledge of learningIn addition to the basic op
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