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"fabric-ca-client enroll" Error - "Failed to insert"
Why am I getting the "Certificate signing failure: Failed to insert record into database: attempt to write a readonly database" error, when running the "fabric-ca-client enroll" command? If the Fabric CA Server is not able to update its database, you will get the "Certificate signing failure: Failed... 2019-09-27, ∼3583🔥, 0💬

EPUB 2.0 Metadata in Calibre Book Library
How to view EPUB 2.0 metadata in Calibre book Library? You can follow this tutorial to view EPUB 2.0 metadata in Calibre book library. 1. Click Row-Your-Boat-2.0.epub to download this sample EPUB 2.0 book. 2. Unzip and open package.opf. You see the following metadata elements: &lt;package xmlns=... 2019-01-12, ∼3582🔥, 0💬

Joining Keys and Values into an Array in PHP
How To Join a List of Keys with a List of Values into an Array in PHP? If you have a list keys and a list of values stored separately in two arrays, you can join them into a single array using the array_combine() function. It will make the values of the first array to be the keys of the resulting ar... 2017-01-11, ∼3580🔥, 0💬

Write Minimum Atom 1.0 Feed File
How to write a Minimum Atom 1.0 Feed File? If you want your Website to support a minimum Atom 1.0 feed, you can follow this tutorial. 1. First create a file called "atom.xml" with the following content: &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;feed xmlns="http://www.w3.org/2005/ A... 2017-12-13, ∼3578🔥, 0💬

XHTML Element Name Case Sensitive
Is XHTML Element Name Case Sensitive? Yes, XHTML element names are case sensitive. All element names must be written in lower case letters. Here are some valid and invalid XHTML element names: &lt;html&gt; - Valid name. &lt;HTML&gt; - Invalid name, must use lower case letters. &l... 2024-04-07, ∼3577🔥, 0💬

Tools to Create Atom Feed Files
Are there any tools to Create Atom Feed Files? Obviously, there are many tools to create Atom Feed files: Using Atom on-line scrapers - On-line scrapers are on-line services that can analyze your Web pages and convert the result into Atom feed files automatically. All you need to do is to provide th... 2017-11-25, ∼3577🔥, 0💬

Download Latest Version of Python for Windows
How to download the latest version of Python on my Windows computer? You can follow this tutorial to download the latest version of Python on your Windows computer: 1. Go to Python download Website . 2. Click the "Download Python 3.6.2" button. You see the download file save prompt. 3. Save the down... 2018-04-12, ∼3567🔥, 0💬

Working with MySQL Database in PHP
Where to find tutorials on how to work with MySQL Database in PHP? A collection of tutorials to answer many frequently asked questions on how to Work with MySQL Database in PHP. Clear explanations and tutorial exercises are provided on connecting and selecting MySQL database, creating and dropping t... 2016-10-22, ∼3560🔥, 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, ∼3549🔥, 0💬

EPUB 2.0 Metadata - dc:description Element
What is EPUB 2.0 Metadata "dc:description" Element? EPUB 2.0 Metadata "dc:description" is an optional metadata element to specify a long description of the EPUB 2.0 book. Here is a good example of a "dc:description" metadata element &lt;dc:description&gt; "Row,Row, Row Your Boat" is a popula... 2019-01-26, ∼3547🔥, 0💬

View RSS Feeds with IE (Internet Explorer)
How to View RSS Feeds with IE (Internet Explorer)? If you want to view RSS Feeds with IE (Internet Explorer), you can follow this tutorial: 1. Launch IE (Internet Explorer) 11. 2. Enter the following in the URL input box: http://dev.fyicenter.com/rss_x ml.php3. Press "Enter" key. You see the RSS fee... 2017-10-16, ∼3544🔥, 0💬

What Is json.JSONEncoder Class
What Is json.JSONEncoder Class? json.JSONEncoder class is the underlying class that supports json.dumps() functions. The following Python example shows you how to use json.JSONEncoder class to perform the same JSON encoding job as json.dumps function: &gt;&gt;&gt; import json &gt;&am... 2018-10-08, ∼3541🔥, 0💬

EPUB 3.0 Metadata - dc:creator and dc:contributor Elements
What is EPUB 3.0 Metadata "dc:creator" and "dc:contributor" elements? EPUB 3.0 Metadata "dc:creator" and "dc:contributor" are optional metadata elements to specify authors and contributors of the EPUB 3.0 book. For example, the following two elements specify the author and the illustrator of the boo... 2018-05-19, ∼3541🔥, 0💬

What Is EPUB 2.0 Package Metadata
What Is EPUB 2.0 Package Metadata EPUB 2.0 Package Metadata encapsulates meta information of the EPUB 2.0 book. Package Metadata, represented by the "metadata" element, is specified as the first required sub-element of the root "package" element in an EPUB 2.0 package file like package.opf: &lt;... 2022-04-13, ∼3539🔥, 0💬

Including Array Elements in Double-Quoted Strings in PHP
How Many Ways to Include Array Elements in Double-Quoted Strings? There are 2 formats to include array elements in double-quoted strings: "part 1 $array[key] part 2" - This is called simple format. In this format, you can not specify the element key in quotes. "part 1 {$array['key']} part 2" - This ... 2016-10-13, ∼3539🔥, 0💬

Hello-3.0.epub - "mimtype" File
How to create the "mimetype" file of an EPUB 3.0 book? The "mimetype" file of an EPUB 3.0 book is a required file in the book ZIP container. It specifies the mimetype of an EPUB 3.0 book file. Here is the requirement on the "mimetype" file: 1. The "mimetype" file must be named as "mimetype". 2. The ... 2018-11-29, ∼3538🔥, 0💬

EpubCheck 4.0.2 --json Option
What is EpubCheck 4.0.2 "--json" Option? EpubCheck 4.0.2 "--json" option allows you to generate a JSON output file containing all properties of the EPUB book. You can try it on Hello-3.0.epub: C:\fyicenter&gt; java -jar epubcheck-4.0.2\epubcheck.jar --json Hello.json Hello-3.0.epub No errors or ... 2018-11-17, ∼3531🔥, 0💬

'align' - Horizontal Alignment HTML Tables
How To Control Horizontal Alignment in Table Cells? By default, text in all table cells are aligned to the left horizontally. If you want to control horizontal alignment yourself, you need to use the "align" attribute in a "tr" element or a "td" element: &lt;tr align="left|center|right"& gt;... 2017-05-05, ∼3529🔥, 0💬

json_encode() - PHP Associative Array to JSON Object
How to convert PHP Associative Arrays to JSON Objects using the json_encode() function? Actually in PHP, all arrays are associative arrays. If you create an array with regular array syntax and functions, PHP actually stores it as an associative array with the index number assigned to each elements a... 2023-08-17, ∼3528🔥, 0💬

Differences between RSS 2.0 and Atom 1.0
What Are Main Differences between RSS 2.0 and Atom 1.0? Main differences between Atom 1.0 and RSS 2.0 are: Atom has separate "summary" and "content" elements, while RSS only has one "description" element. Atom standardizes auto-discovery in contrast to the many non-standard variants used with RSS 2.... 2017-12-13, ∼3527🔥, 0💬

Sending an HTTP POST Request
How to send an HTTP POST request? I want to submit a form to a Website. To submit a form to a Website, you can use the requests.post() function: &gt;&gt;&gt; r = requests.post(url, data = {'key':'value'}) The second argument 'data' is a 'dict' object contains of the list of form field na... 2018-08-14, ∼3526🔥, 0💬

PHP Built-in Functions for Arrays
Where to find tutorials on how to use PHP built-in functions to manage arrays? A collection of tutorials to answer many frequently asked questions on how to PHP functions to manage arrays. Clear answers are provided with tutorial exercises on searching keys and values, sorting arrays, merging two ar... 2017-01-29, ∼3522🔥, 0💬

"MathLibrary.cpp" - Build DLL Library
How to build a C++ DLL library with Visual Studio command tools? The next step to create a DLL library is to create library source code and build the library .dll file as shown in this tutorial: 1. Create the C++ source file, MathLibrary.cpp, with a text editor: // MathLibrary.cpp : Defines the expo... 2023-05-31, ∼3511🔥, 1💬

💬 2022-11-22 Octan: Beauty in simplicity.

Sending an HTTP Request with 'urllib.request'
How to send an HTTP request using the "urllib.request" module? To send an HTTP request to the Internet, you can use the urllib.request.urlopen() function as described below: r = urllib.request.urlopen(url, data=None, [timeout, ]*, cafile=None, capath=None, cadefault=False, context=None) where: url c... 2018-09-24, ∼3507🔥, 0💬

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Blockchain Container EPUB General HTML JSON Microsoft Node.js PHP Python RSS Tools Visual Studio Web