convert2mp3 not working

Beginner Erlang, when compiling the. erl file, Tip: >1 C (some_module) ./some_module.erl:none:no such file or directory Error This is because the. erl file is not being caused in the current working directory of Erlang. Enter the following function in the Erlang shell to get the current working directory: >1 pwd (). You can switch the working directory usin

There are three classes commonly used in Java for working with strings: java.lang.String, Java.lang.StringBuffer, Java.lang.StringBuilder, all three are in the final class and are not allowed to be inherited, primarily in terms of performance and security, because these classes are often used, and take into account the fact that the parameters are prevented from being modified to affect other applications. StringBuffer and StringBuilder two are basica

5, 5, 4, platform platform bus working principle5, 5, 4, 1, what is platform bus(1) Platform bus is different from i²c, USB, SPI, PCI bus, they belong to the physical bus, platform bus is a virtual bus, abstract out, platform bus device does not correspond to the real existence of a device, This kind of bus is not in real physics. For example, I²c has a physical i²c bus, but the platform bus does not physically have such a bus.(2) CPU and external com

Shell Working principleWhat is a shell?The shell is a general term for command Language, command interpreter and programming language, which is an interface between the user and the Linux kernel, and provides the user with an interface to use the operating system.Shell the characteristicsShell An important feature of this is that it is itself an interpreted programming language that is run by the interpreter throughout the process, one line at a tim

are used to pass related options to specific modules, which are then explained by module analysis.For example, use this bar to open the module debug mode, or to pass a module such as time-out values such as parameters. In addition, he is also used to support the password mapping techniques described below.If either column has an error or a module is not found, the row is ignored and logged as a critical error.To this end, the basic architecture of Pam and the basic format of the PAM configurati

identified and processed by the hardware; addressing methods, including minimum addressing units and address arithmetic; a register definition, including the definition, number and usage of the operand register, the variable address register, the control register, etc. The instruction system includes the operation type and format of the machine instruction, the ordering and control mechanism among the instructions, etc. anomaly mechanisms, including interrupts, NMI, and internal anomali

There are lots of open source libraries for working with Excel files, Common poi, jxls .....Focus on the method of POI processing Excel:1. Write Files//initialization of data tables with row precedence Public Static voidCreaterows ()throwsIOException {Workbook WB=NewHssfworkbook (); //Create a tableSheet Sheet = Wb.createsheet ("Test sheet_01"); ListNewArraylist(); List.add (A); List.add ("B"); intRowCount = List.size ();//set the number of rows base

Hibernate, struts, and one spring will be sent out together.Spring working mechanism and why should it be used?1.SPRINGMVC Please submit all requests to Dispatcherservlet, which will delegate the other modules of the application system responsible for the actual processing of the request.2.DispatcherServlet queries one or more handlermapping to find the controller that handles the request.3.DispatcherServlet request Submit to target Controller4.Contro

Dataquest is a good website, the inside of the course short refining, very suitable for beginners quick start, and to establish a sound knowledge system.I was in a treasure to buy the monthly rent dataquest, one months also only 90 yuan, the link is as follows: https://item.taobao.com/item.htm?id=564528265057This article is to learn working with API and Web Scrapy notes; The API of the website is put on the server, when the client requests th

that we can run#include "stdio.h"#include "string.h"#include "stdlib.h"voidFunc1 (Char* * Dest,Char* SRC,intN) {(*dest) = (Char*)malloc(sizeof(Char) *n);strcpy(*DEST,SRC);}intMainintargcChar* * args) {Char* p = NULL;CharStr[] ="Foreach_break";intLen =sizeof(str);printf("%d\n", Len); Func1 (p,str,len);printf("%s\n", p); Free(p); p = NULL;}It runs the following results:Why can it run?Note the comparison with the wrong code, what is different:Error code:char ** p = NULL;func1(p,str,len);Correct co

First, memcached working principleBasic concept: Slab,page,chunk.Slab, is a logical concept. It is preprocessed at the start of the memcached instance, and each slab corresponds to a chunk size, which means that different slab have different chunk size. How many slab are assigned is determined by the parameter-F (growth factor) and-N (chunk minimum size).page, which can be understood as memory pages. The size is fixed at 1m. Slab requests the page fro

/*** Preface*/When he first used MyEclipse, he was shocked by the variety of functions he had. When the project is large, it is also plagued by his more validation errors. Therefore, the configuration of its working space is very important, can reduce the "weight" of myeclipse, but also allows us to develop more conveniently./*** Character Set UTF-8*/Windows-> Preferences->workspace to set upWindows-> Preferences->content Types The next few settings a

Original: http://www.mkyong.com/spring/spring-is-not-working-in-value/by Mkyong | February 4, 2015 | Last Updated:february 12, 2015A simple Spring @PropertySource example to read a properties file.Db.propertiesDb.driver=oracle.jdbc.driver.oracledriverAppconfig.java@Configuration @propertysource ("Classpath:db.properties") public class AppConfig {@Value ("${db.driver}") Private String driver;But the property placeholder was ${} unable to resolve on @Va