"Symfoware OPEN" database application development

Tags: symfoware open postgresql jdbc ODBC LIBPQSymfoware Open System-Import method, connection form, execution methodJDBC (Java database Connectivity) is the interface specification for Java and database, and JDBC defines a generic low-level

Db_file_name_convert parameter causes ora-15124:asm FILE NAME ' ... ' Containsan invalid alias name

Tags: db_file_name_conver ora-15124RAC Main Library +DG in a stand-alone environment, once the primary repository has an archive interval before it can be deleted for various reasons, such as the archive being cleaned up, the backup set policy has

Pthread thread (ii) thread synchronization--Mutex/Lock

Label:  The Mutex (mutex) is the abbreviation for "Mutual exclusion". Mutexes are the primary way to implement thread synchronization and to protect simultaneous write-shared data.Mutex protection for shared data is like a lock. In Pthreads, only

Public keys, private keys, digital signatures, digital certificates, symmetric and asymmetric algorithms, HTTPS

Label:A little bit confused about the public key and the private key, search for some information, do some sorting it, first look at this: Encryption--Public keyDecryption--Private keySignature--Private keyAuthentication--Public key Look at this.

Derivative of R language implementation

Label:ObjectiveHigher mathematics is a basic course for every college student to learn, and it may be the most easily forgotten knowledge after the test.I racked my brains when I was studying high numbers, but I never knew why I was learning. Life

Design pattern in a comprehensible way--factory method Mode (Factory methods)

Label:IntroducedIn the simple factory model, we mentioned that the factory method pattern is an extension of the simple factory pattern, which belongs to the design pattern in the Gof23 design pattern. It still solves the problem of creating objects

No Nonsense xml--xml constraints (DTD)

Tags: xml, java DTD Basic terminology First, preface prolog: Includes XML declaration (XML Declaration) and document type declaration (Doc type Declaration).II. Good structure (well-formed specification): An XML document that conforms

No nonsense xml--xml details

Tags: xml java Web. Starting today to study XML, in fact, in the actual development, we participate in the real XML development is not a lot, write a configuration at most, but I still think it is necessary to put the knowledge of XML again. As the

Spirit everywhere article old, learning deep time (hard direction)--leo2014 year-end summary

Label:It is the end of the year Suiwei, the day to write the summary. Before I read the summary of the four years from 2010 to 2013, I saw a step-by-step approach to the road, very good!?Review key words: MBA Top Ten Alumni career transition running

Leetcode Roman to Integer Roman character to digital problem solving report

Tags: leetcode problem solving report surface test algorithm Javahttps://oj.leetcode.com/problems/roman-to-integer/Given a Roman numeral, convert it to an integer.Input is guaranteed to being within the range from 1 to 3999.Convert a given Roman

If else if else

Label:1, If-elseGrammar:if (condition){Statement 1;}Else{Statement 2;}Execution process:If the condition is true, the statement block 1 of the if band is executed and the statement block 2 of the else Band is skipped, and if the condition is false,

JDK7 Dynamic Method Invocation

Tags:jvm   invokedynamic    dynamic     method calls    jdk7        in JDK7, Java provides support for dynamic language features, enabling the JSR 292 Supporting

PAT (Basic level) practise:1017. A divided by B (20)

Label:"Topic link"The subject requires a A/b, where A is a positive integer that does not exceed 1000 bits, and B is a 1-bit positive integer. You need to output the quotient Q and the remainder r so that a = B * Q + R is set up.Input format:The

30-year-old programmer review life and look forward to the future

Label:I look back on the road that I have traveled so many years since graduationFrom July 2007 out of school to this December 2014, has been a full 7.5. Think of yourself before 7.5, and then look at me now, so many years past the road, feeling

VS2010 shortcut Keys Daquan

Label:Believe. NET developers want to be able to memorize a variety of VS shortcut keys to improve the efficiency of peacetime development, but suffer from memory ability is too poor and shortcut keys and special many, particularly annoying, so

SMTP protocol Analysis

Tags: Chapter 1th of the SMTP protocol analysis. SMTP Overview 1.1. SMTP in Mail communication, SMTP, which is the Simple Mail delivery protocol, the corresponding RFC document is RFC821. As with most application layer protocols like HTTP, it works

Cocos2d-x Study Notes (15)--------> Physics engine

Label:Physics engineThe cocos2d-x engine incorporates two physical engines, box2d and Chipmunk, which are excellent 2D physics engines, and the X engine incorporates them in The SDK . box2d Use is more extensive, here choose box2d to study. What

Time profiling and memory leaks consumed by each function valgrind

Label:Source: Http://06110120wxc.blog.163.com/blog/static/37788161201333112445844/ARM (hisi) installation of profiling and Valgrind aboveUse of profilingThe GNU gprof can print out the elapsed time of each function in the program, helping the

SLS Evaluation Report

Label:What is SLS?  Simple log service, or SLS, is a service for log collection, storage, querying, and analysis. Users simply configure the location and format of the log generated information, you can query the massive log in real-time, and

Handlebars using Demo

Tags: <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "><html xmlns=" http://www.w3.org/1999/xhtml "><head><meta http-equiv=" Content-type "content=" text/

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