. During the compilation process, we found that the description of the record area in the explanation of the pure IP database format was not comprehensive, but it was not very large, so I didn't need to write a description of the pure IP database format, if you are interested, you can read the following code. The code contains detailed comments, which can be easily understood.
After creating an instance of this class, the instance stores the opened file pointer and some information required for
How does PHP read dat files? How does PHP read two dat files, two data files, one storage name and one data access file? ------ Solution ------------------ first of all, you need to know how data is organized ------ solution ------------------ first, you need to know how data is organized ------ solution ------------------ read the php documentation, and the best way for PHP to read the
Today, I spent a whole day working to learn how to decrypt and solve Garbled text ,~~ Now take the latest official chargrp-fc.dat files for decryption and decoding provides the following explanation:
1, first prepare the following tools: l2encdec, l2asm-disasm
2. Use the l2encdec tool to put it in the L2 system directory to parcher again. (You cannot crawl your posts by yourself ~)
3. Click "start" --> "run" And Enter cmd to open the DOS window. For example, if c: \ Documents and Settings
In the rac database, the HC_SID.dat file is used by instances in other Oracle_Home instances. Reference: RACdatabaseHC_SID.datisusedbyinstanceofdifferentOracle_Home (DocID1618161.1) applicable to: OracleDatabase
In the rac database, the HC_SID.dat file is used by instances in other Oracle_Home instances. Reference: RAC database HC_SID.dat is used by instance of different Oracle_Home (Doc ID 1618161.1) applicable to: Oracle Database-Enterprise Edition-Version 11.2.0.0 and later Infor
In the rac
DAT is not a standard file. Many software uses this extension, but the file has different meanings. and many data analysis software also uses this extension to save data. So this depends on the specific software situation to decide. DAT files, which are meant to be data according to the extension, that is, data files, such files do not have an absolute definition, such as the VCD on the
improves efficiency;Based on the first ip byte as the prefix, the first index and the last index prefixed with this number are parsed to narrow the query interval,Then, we can quickly find the corresponding interval using a binary search in this interval, improving the efficiency by several levels.
Compression:The original txt is 15 M, and the generated dat structure is 2.45 M.
Performance:Normal Computer Testing, resolution, 1 million ip takes 2.012
In PHP no matter what type of file to read is mostly using the fopen function, and then with the other functions of the operation, let me introduce the method of reading DAT data file.
The following is an article on basic file read and write operations, I used to read this article after learning the basic operation of the file, sent here to share with you: Copy the content to the Clipboard
The code is as follows
Copy Code
$
Hpl Tuning
After having built the executable hpl/bin/
We first describe the meaning of each line of this input file below. Finally, a few useful experimental guide lines to set up the file are given at the end of this page.
--------------------------------------------------------------------------------
Description of the hpl. dat fileLine 1: (unused) typically one wocould use this line for its own good. For example, it cocould be used to summarize th
Dat data format 5A 5A 5A xx (frame header) the frame header is followed by the first ad Channel 1 data (2 bytes), the second Ad Channel 1 data (2 bytes), and the first ad Channel 2 data (2 bytes ), the second AD Channel 2 data (2 bytes ),......... The first ad Channel 6 data (2 byte) and the second Ad Channel 6 data (2 byte ). I extracted the first ad Channel 6 data. Then convert it to 16 bit, and then-32768 to positive and negative signals, because a
The physical file "D: \ understructuredata _ DAT. MDF" cannot be opened ". Operating System Error 5: "5 (Access denied .) ", Unable to open the physical file
Error message:
Title: Microsoft SQL Server Management Studio ------------------------------ the attached database failed to "HC-PC" on the Server. (Microsoft. SqlServer. Smo) for help information, click: http://go.microsoft.com/fwlink? ProdName = Microsoft + SQL + Server ProdVer = 10.50.1600.1
Pure qq ip database
Copy codeThe Code is as follows: using System;
Using System. Collections. Generic;
Using System. Text;
Using System. IO;
Using System. Web;
Using System. Configuration;
Namespace BLL{Public class IPLocationSearch{Private static readonly QQWry qq = new QQWry (ConfigurationManager. etettings ["ip"] + "qqwry. dat ");
Public static IPLocation GetIPLocation (string ip){Return qq. SearchIPLocation (ip );}}
/*Usage:
Example:BDQQ. Data. Q
. localstr """);"Case else getipinfoav = "document. write ("" You are from: " IP " region: " wry. country " wry. localstr """);"End selectEnd Function'================================================ ====='Return qqwry information (qqwry. DAT version and number of records)'================================================ =====Function wryinfo ()Dim wry, iptype, qqwry (1)'Set the Class ObjectSet wry = new tqqwryIptype = wry. qqwry ("255.255.255.255 ")
The DAT file is used to define the structure of the file system when wince is started, that is, to define the folders and locations of the files. During each cold start, the filesys module creates directories and files under directories Based on the content in the. dat file.
In BSP, We can find platform. dat. After creating an wince project, you can find project.
Examples of dat file read/write operations in PHP. In php, the fopen function is mostly used for reading files of any type, and other functions are used for subsequent operations. The following describes how to read dat data files. The following is an article in php that uses the fopen function instead of reading any type of files, and then works with other functions to perform operations. next I will intro
method One-tone video file
1 if the audio and video files, some can be directly with the Microsoft's own media player and other media players to open the device.
2 The general DAT files are not associated with any programs, so you also need to manually open them in Windows Media player. In Windows Media player, press ALT to press the list of pop-up menus:
3 Select "File" from the pop-up menu and select "Open ..." command. or press Ctrl+o
In php, the fopen function is mostly used to read files of any type, and then operated with other functions. The following describes how to read dat data files. the following is an article about basic file read/write operations. I used to learn this article after reading it... in php, the fopen function is mostly used to read files of any type, and then operated with other functions. The following describes how to read
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