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What Is Python Module 'urllib'
What Is Python module "urllib"? "urllib" is a Python internal module that allows you to communicate with Internet resources that are represented by URLs. Two main Internet protocols are supported: HTTP and FTP. The current version of "urllib" module is divided into 4 sub-modules: urllib.request - fo...
2018-09-24, 1627🔥, 0💬

Processing Uploaded Files in PHP
How To Process Uploaded Files in PHP? How to process the uploaded files? The answer is really depending on your application. For example: You can attached the outgoing emails, if the uploaded files are email attachments. You can move them to user's Web page directory, if the uploaded files are user'...
2016-10-17, 1627🔥, 0💬

What Is OpenID
What Is OpenID? OpenID is a decentralized user authentication protocol developed by the OpenID Foundation. OpenID allows users to be authenticated to a Website using a third-party identify management service. In other words, OpenID is a SSO (Single-Sign-On) technology. As SSO technology, OpenID offe...
2019-01-20, 1625🔥, 0💬

Generic JSON Schema Validation Keywords
What are other generic JSON Schema validation keywords? Several other generic JSON Schema validation keywords are listed below. They are always applied to the JSON instance. "enum" - The JSON instance must match one of the elements in the given array. For example, JSON Schema: {"enum": ["YES", "NO"]...
2017-08-25, 1617🔥, 0💬

Hello-3.1.epub - Package File: package.opf
How to create a package file like package.opf for an EPUB 3.1 book? At least one package file, like package.opf, is required for an EPUB 3.1 book in the book ZIP container. It defines required meta data and specifies 2 required content files. Here is the requirement on a package file: 1. A package f...
2022-05-31, 1616🔥, 0💬

Implicit and Explicit ID of JSON Type
What are differences of the implicit ID and the explicit ID of a JSON type in JSON Schema? If a JSON type is defined under a "definitions" property, it could have two identifications: 1. Implicit identification: The implicit identification of a JSON type is an internal bookmark in the form of "#/def...
2017-08-20, 1613🔥, 0💬

Call JSON.parse() with Reviver Function
What is a reviver function that you can provide the JSON.parse() function call? The reviver function is an event handler function that is called repeatedly whenever a JSON element is parsed during the execution of the JSON.parse() function. The reviver function must defined with the following signat...
2023-09-07, 1609🔥, 0💬

Replacing Characters in a String in PHP
How To Replace a Group of Characters by Another Group? While processing a string, you may want to replace a group of special characters with some other characters. For example, if you don't want to show user's email addresses in the original format to stop email spammer collecting real email address...
2016-10-13, 1609🔥, 0💬

JSON Validation at jsonlint.com
How to use the JSON Validation Tool at jsonlint.com? If you want to try the JSON Validation Tool at jsonlint.com, you can follow this tutorial: 1. Go to the The JSON Validator page at jsonlint.com. 2. Enter the following JSON text string in the text area: { "firstName": "John", "lastName": "Smith", ...
2023-09-05, 1608🔥, 0💬

Google Chrome Showing Atom Feeds as XML
Why is Google Chrome Showing Atom Feeds as XML? Google Chrome is showing Atom Feeds as XML, because it has stopped the support of formatted viewing of Atom feeds by default. Follow this tutorial to see this behavior: 1. Launch Google Chrome 60. 2. Enter the following in the URL input box: http://dev...
2017-12-31, 1608🔥, 0💬

Special Characters in Double-Quoted Strings in PHP
What Are the Special Characters You Need to Escape in Double-Quoted Stings? There are two special characters you need to escape in a double-quote string: the double quote (") and the back slash (\). Here is a PHP script example of double-quoted strings: &lt;?php echo "Hello world!"; echo "Tom sa...
2016-10-13, 1608🔥, 0💬

re.match() - Match from String Beginning
How to match the beginning part of a target string with a regular expression using re.match()? The re.match() function allows you to match the beginning part of a target string with of a given regular expression. import re m = re.match(pattern, string, flags=0) Where: pattern is the regular expressi...
2018-10-19, 1606🔥, 0💬

Commonly Used HTML Inline Elements
What Are Commonly Used Inline Elements? Here are some commonly used inline elements: strong - Defining text with a strong emphasis. em - Defining text with an emphasis. code - Defining computer code text. sub - Defining a subscript text. sup - Defining a superscript text. del - Defining text to be t...
2017-08-03, 1605🔥, 0💬

Start Python in Interactive Mode
How to Start Python in Interactive Mode on my Windows computer? You can start Python in interactive mode on your Windows computer in several ways: 1. "python" in command window - In a command window, enter the "python" command. If the python installation folder is in the PATH environment variable, t...
2023-01-06, 1604🔥, 0💬

RSS "channel" Element
What is the RSS "channel" element? The RSS "channel" element presents a group of RSS feed items generated by the same producer. The RSS "channel" element contains the following sub elements. title - REQUIRED. The name of your Website, if you are producing this RSS feed. For example: &lt;title&am...
2017-11-11, 1604🔥, 0💬

Reading One Character from a File in PHP
How To Read One Character from a File in PHP? If you have a text file, and you want to read the file one character at a time, you can use the fgetc() function. It reads the current character, moves the file pointer to the next character, and returns the character as a string. If end of the file is r...
2016-12-02, 1603🔥, 0💬

HTML Ordered List Item Markers
How To Use Different Markers on Ordered List Items? By default, browsers will use decimal numbers as the item markers for ordered lists. If you want to change them to something else, like alphabetical letters, you need to use CSS properties. Here is a tutorial sample showing you how to set item mark...
2017-05-29, 1602🔥, 0💬

HTML Forms and Input Fields
Where to find tutorials of introduction to HTML Forms and Input Fields? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team in introduction to HTML Forms and Input Fields. Clear answers are provided with tutorial exercises on forms and input fields: f...
2017-04-22, 1601🔥, 0💬

Local Variables in a Function in PHP
What Is the Scope of a Variable Defined in a Function? in PHP? The scope of a local variable defined in a function is limited with that function. Once the function is ended, its local variables are also removed. So you can not access any local variable outside its defining function. Here is a PHP sc...
2016-12-08, 1601🔥, 0💬

Function Returns Data by Value in PHP
How Values Are Returned from Functions? in PHP? If a value is returned from a function, it is returned by value, not by reference. That means that a copy of the value is return. Here is a PHP script on how values are returned from a function: &lt;?php $favor = "vbulletin"; function getFavor() { ...
2016-12-08, 1600🔥, 0💬

Using Visual Studio Command Prompt
Where to find tutorials on Using Visual Studio Command Prompt? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Using Visual Studio Command Prompt? What Is Visual Studio Command Prompt Start Visual Studio Command Prompt "Hello.c" - Compile and R...
2023-10-27, 1599🔥, 0💬

What Is File Upload in PHP
What Is File Upload in PHP? File upload is Web page function which allows visitor to specify a file on the browser's system and submit it to the Web server. This is a very useful function for many interactive Web sites. Some examples are: Web base email systems for users to send attachments. Forums ...
2016-10-17, 1599🔥, 0💬

First Visual C# Program in Visual Studio 2017
Where to find tutorials on writing first Visual C# Program in Visual Studio 2017? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on writing first Visual C# Program in Visual Studio 2017? Create Visual C# Project in Visual Studio 2017 WPF App with...
2017-08-13, 1597🔥, 0💬

Update Anchor Peer of Each BYFN Organization
How to Update Anchor Peer of Each BYFN Organization? You can follow this tutorial to Update Anchor Peer of Each BYFN Organization. 1. Update the default peer as the anchor peer: bash-4.4# echo $CORE_PEER_ADDRESS peer0.org2.example.com:7051 bash-4.4# peer channel update -o orderer.example.com:7050 -c...
2019-04-13, 1595🔥, 0💬

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