tc 721

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Obtain the field information of the oracle table structure

Obtain the field information of the oracle table structure. select. column_id as column number,. column_name as column name,. data_type as type, decode (. data_type, 'number',. data_precision,. data_length) as length,. data_scale as decimal point, decode (e. uniqueness, 'unique', 'y', 'n') whether the as is UNIQUE, decode (e. key, 'y', 'y', 'n') is the primary key, f. comments as comment,. whether nullable as can be null,. data_default as default value: from user_tab_columns a, user_col_comments

C ++ template metaprogramming 2

: Solution in four steps 1. first determine whether c contains Type x 2. If there is a replacement 3. If no value is found, the meta type is returned. 4. Special template features template struct is_same: boost::mpl::bool_ {};//#1template struct is_same : boost::mpl::bool_ {};//#1template struct replace_type_imp;//#2template struct replace_type{static bool const value = is_same ::val

MSTP address link load balancing and link detection

tree fails over, the forwarding path (MAC forwarding) of the VLAN that it maps to is also changed. Spanning tree notifies all switches through TC messages to take timely action to update Mac forwarding; What happens after the 3 fiber link disconnects? The link2 fiber link disconnects, and the G (E) 0/0/2 port on both switches is still up, except that BPDUs sent from the peer switch are not received. Spanning tree after the dead time timeout, the G0/0

Gridview merge columns and row classes

using system; using system. collections. generic; using system. LINQ; using system. web; using system. data; using system. web. UI. webcontrols; /// // gridviewmergecell merges the gridview Liyang 20090916 /// public class gridviewmergecell { Public gridviewmergecell () { // todo: add the constructor logic here // } Public static void grouprow (gridview) {{ gridviewrow previousrow = gridview. rows [rowindex + 1]; For (INT I = 0; I {If (row. cells [I]. Text = previusrow. cells [I].

[Reading Notes] binary hancks (2) livepatch practices on x86

/app.cIn file encoded ded from./targ-cpu.h: 1,From http://www.cnblogs.com/binutils-2.15/gas/config/obj-elf.h:42,From./obj-format.h: 1,From http://www.cnblogs.com/binutils-2.15/gas/config/te-linux.h:4,From./targ-env.h: 1,From http://www.cnblogs.com/binutils-2.15/gas/as.h:626,From http://www.cnblogs.com/binutils-2.15/gas/app.c:30:Http://www.cnblogs.com/binutils-2.15/gas/config/tc-i386.h:451: error: array type has incomplete element typeMake [3]: *** [Ap

Detailed explanation of Turbo C 2.0 settings

Detailed explanation of Turbo C 2.0 settings For beginners, Turbo C 2.0 is undoubtedly one of the simplest and most ideal environment for getting started programming. However, due to incorrect environment variable settings, the program cannot be compiled and run, this severely impairs the hard-earned self-confidence of beginners. In order to quickly solve this type of problem, so that everyone can focus on programming, we specially write this article to help beginners who are interested in prog

Principles of the tratc (TrafficControl) Framework

Principles of the tratc (TrafficControl) FrameworkRecently, my work is more or less related to Linux throttling. Since I learned about TC a few years ago and understood its principles more or less, I have never touched it any more, because I do not like TC command lines, it is too cumbersome, iptables command lines are also cumbersome, but more intuitive than TC

VC BASE64 encoding and decoding use of detailed _c language

how to use it? Give the following two examples First: Convert a picture to txt text and save it Select an image file and convert it to text save to _t ("D:\\2.txt" void Ctextpicdlg::onbnclickedbutton2 () { //TODO: Add control notification Handler code here CFileDialog file (TRUE, ". jpg", ""); if (file. DoModal () = = Idok) { CFile data (file. GetPathName (), cfile::modereadwrite); int len = data. GetLength (); BYTE *DV; DV = (BYTE *) malloc (len*sizeof (Byte));

Turbo C 2.0 User Guide

Turbo C 2.0 User Guide Download tc2.0 Turbo C 2.0 found that many friends downloaded the file, but many people downloaded the file but did not configure it. The result was that it was not usable. To familiarize those who have just started to learn C language with the Turbo C 2.0 development environment as soon as possible, I have excerpted this article from the Internet for your reference. I hope it will be helpful. Before reading this article, I will first describe how to install and use C lan

Summary L7-filter

) firewall settings L7filter provides functions such as network packet filtering and traffic management. As an extension of iptables, the command syntax for iptables to load l7filter is Iptables [specify table Chain]-M layer7 -- l7proto [name of Protocol]-J [action] Generally, the mangle table for iptables operations is as follows: Iptables-T mangle-A postrouting-M layer7 -- l7proto [etc.] Disable Application Layer services The l7filter can disable QQ, HTTP, FTP, MSN, P2P and other applica

Java Simple tank war making code _java

private static int step = R.nextint (12) +3; Enemy tank Random Move step 3-14 step private int life = 100; Blood Volume private BlOodbar BB = new Bloodbar (); Blood clots//ImageIcon icon = new ImageIcon ("res\\mytank.jpg"); ImageIcon icon2 = new ImageIcon ("res\\enemytank.jpg"); Image image = Icon.getimage (); Image image2 = Icon2.getimage (); Private Tankclient TC; Main class Permissions Public Tank (int x, int y, Boolean good, color c

Java makes a simple tank war _java

For details please refer to the note, here is not much nonsense, to achieve a childhood classic. Blood.java Package Com.hkm.TankWar; Import java.awt.*; /** * Blood clots, our tanks eat can gyrus; * @author hekangmin * */public class Blood {private int x,y,w,h;//the position and width of the blood clot; private T Ankwarclient TC; private int step=0;//records the number of steps the blood clot moves; private Boolean live=true; public Boo

Familiar with the Tkinter graphics package in Python--(write a parameter calculator)

, MG, MW, MS, Cont): V6text.set (') V6text.set ((LM/MW)/((cont/(1-cont)) (LB/MG)) def cmp_f_bf (LB, LW, LM, Vmill, MG, MW, MS, CONT): F_BF = ((cont/(1-cont) * (LB/MG)) + (LB/MG))/vmill v7text.set (') V7text.set (F_BF) def CMP_F_BMW (l B, LW, LM, Vmill, MG, MW, MS, cont): BMW = (LM/MW + LW/MW + lb/mg)/vmill v8text.set (") v8text.set (BMW) Try: Def comput (): lb = e1.get () LW = E2.get () lm = E3.get () Vmill = E4.get () mg = Rgg.get () MW =Rww.get () ms = Rss.get () cont = Jkk.get () lb =

Linux Analog Control Network delay

Previously thought can use the Linux comes with the tool to simulate the control network delay, so the internet found some information. Later found that the data found at present only support on a network card to simulate the delay of sending messages, and can not set a differential network delay, or when the time to simulate to send a delay to the B to be simulated to send a delay inconsistent, the TC function of Linux is powerless. Record the useful

Key-value Database

for massive data , and it has no native extensible mechanism, no scale (extensible) capability, and relies on clients for distributed read and write. So the Redis-fit scenario is largely confined to high-performance operations and operations with smaller data volumes . According to Redis's official website test report, 50 concurrent requests, 10w accesses, write speed of 11x10e4/s, read speed of 8,100 times/s. There are currently github,engine Yard on the site using Redis.Basic data type Descri

Linux-driven core multithreading (ii)

This digest from http://www.cnblogs.com/zhuyp1015/archive/2012/06/11/2545702.htmlCore multithreading is used in the project, I am not familiar with, encountered a very embarrassing problem, causing the CPU to run 100%.This is the first kernel-threaded thread to write, with global variables that enable communication between two kernel threads. But here comes the fatal error: whenever Wait_event_interruptible () is awakened by wake_up_interruptible, the thread enters the dead loop. The later disco

What's happening with node. JS and Io.js

honeymoon period, but when the two steps inconsistent, the differences will be exposed. This was evident at the late stages of the node. JS Project, where the community felt the project was progressing slowly, while Joyent's management thought he was stable and reliable.Io.js and node. JS Advisory BoardDuring the progress of "Node Forward", community members communicated a basic open management model. This pattern is embodied during io.js.Io.js's open management model is mainly embodied in the

Io.js's service breakthrough

inconsistent, the differences will be exposed. This was evident at the late stages of the node. JS Project, where the community felt the project was progressing slowly, while Joyent's management thought he was stable and reliable. Io.js and node. JS Advisory Board during the "node Forward" progress, community members communicated a basic open management model. This pattern is embodied during io.js. Io.js's open management model is mainly embodied in the following aspects: no longer have gatekee

TRAFFIC-CONTROL:TC Traffic Management Introduction--turbolinux Knowledge Base

I. INTRODUCTION to TCTC, or traffic control, as the name implies, TC is a tool for the flow control of Linux. With TC, you can control the rate at which the network interface sends data.Each network interface (for example: ETH0,PPP0) has a queue that manages and dispatches data to be sent. TC works by setting different typesNetwork interface queue, which changes

Key-value Database __ Database

memory, can not be used for high performance reading and writing of massive data , and it has no native extensible mechanism, no scale (extensible) capability, and relies on client to realize distributed reading and writing. Therefore, the Redis suitable scenarios are mainly confined to the high-performance operations and operations of smaller data volumes . According to Redis's official website test report, 50 concurrent requests, 10w access, write speed is 11x10e4/s, read speed of 8,100 times

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