Posts (page 252)
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4 min readETS (Erlang Term Storage) is a mechanism in the Erlang programming language that allows for efficient storage and retrieval of data. It is primarily used for in-memory storage within an Erlang application.To use ETS for data storage, you first need to create a table using the ets:new/2 function. This function takes two arguments: a table name (an atom) and a set of options (a list of key-value pairs).
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8 min readTo merge XML files into one, you can follow these steps:Understand the XML structure: Familiarize yourself with the XML structure of the files you want to merge. Identify common elements that need to be merged or combined. Open the XML files: Use a text editor or an XML editor to open the XML files you want to merge. Create a new XML file: Create a new XML file that will contain the merged content. This file will be the final result of the merge.
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5 min readIn Erlang, file input/output (I/O) operations are handled using built-in functions and modules that provide convenient and efficient ways to read from and write to files. Here's an overview of how to handle file I/O in Erlang:Reading from a File:To read from a file, first, open the file using the file:open/2 function. This function takes two arguments: the file name and the read mode.Once the file is open, you can use various functions to read data from it.
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8 min readTo parse XML with JavaScript, you can use the built-in DOM Parser or popular libraries like jQuery or Axios. Here's a brief explanation of parsing XML using JavaScript:DOM Parser: The DOM Parser is a standard native JavaScript object that allows you to read and manipulate XML documents.
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7 min readTo implement a simple server in Erlang, you can follow the steps below:Start by creating a new Erlang module. In the module, define the server behavior using the gen_server behavior provided by the OTP (Open Telecom Platform) library. This behavior abstracts away the complexities of writing a server and provides a structured way to handle server events and requests. Implement the callback functions required by the gen_server behavior.
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7 min readIn Erlang, modules are used to organize and encapsulate related functions, types, and other code entities. Here is some information on creating and using modules in Erlang:Creating a Module: A module is defined in a file with the same name as the module and the ".erl" file extension. For example, a module named "my_module" should be defined in a file named "my_module.erl". At the beginning of the module file, use the "-module(ModuleName).
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9 min readTo convert a PDF file into an XML file, you can follow these steps:Install a PDF to XML converter: There are various software applications available that can convert PDF files into XML. You can search online for such converters and choose one that best suits your needs. Open the converter software: Launch the PDF to XML converter on your computer. Select the PDF file: Use the software's file selection option to choose the PDF file you want to convert.
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7 min readOTP (Open Telecom Platform) is a powerful framework that was developed by the Ericsson company for building fault-tolerant, scalable, and distributed applications in the Erlang programming language. OTP provides a set of design principles, libraries, and tools that can greatly simplify the development process and aid in the creation of reliable and maintainable systems.
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7 min readTo build XML in Java, you can use the DOM (Document Object Model) API, which provides a way to create, modify, and traverse XML documents.Import the necessary classes: import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilder; import org.w3c.dom.Document; import org.w3c.dom.Element; Create a new XML document: DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.
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8 min readTo send and receive messages between Erlang processes, you can use the message-passing mechanism provided by the Erlang programming language. Here are the key points to understand:Process Identification: In Erlang, processes are identified by a unique process identifier (PID). Each Erlang process has its own PID, which allows you to send messages directly to specific processes. Sending Messages: To send a message, you can use the ! operator (or the erlang:send/2 function).
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6 min readCreating XML in Java involves using the Java API for XML Processing (JAXP) library, which provides various classes and interfaces for manipulating XML. Here's a step-by-step guide to creating XML in Java:Import the required classes: import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilder; import org.w3c.dom.Document; import org.w3c.dom.Element; import java.io.File; import javax.xml.transform.Transformer; import javax.xml.transform.
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6 min readIn Erlang, you can create and spawn processes using the spawn/1 function. The spawn/1 function takes a single argument, which is a function to be executed by the new process.To create a new process, you can define a function that represents the behavior of that process. This function should follow a specific format: it takes no arguments and returns no value. Instead, any computed result should be sent back to the parent process using message passing.