Ethereum Tutorials - Herong's Tutorial Examples
This book is a collection of tutorial examples on Ethereum and blockchain. Topics include include: What is Ethereum; What is blockchain; Ethereum market value; What is Go Ethereum (Geth); Running a private Ethereum network with Geth; What is Ethereum Mist wallet; What is MetaMask wallet; Ethereum mi... 2022-07-10, 3672👍, 4💬
native2ascii - Native-to-ASCII Encoding Converter
This chapter provides tutorial notes on the native-to-ASCII encoding converter 'native2ascii'. Topics include 'native2ascii' command options, default encoding CP1252 used by 'javac', converting UTF-8 characters into \uXXXX Unicode code sequences, converting \uXXXX sequences back to native encodings. 2022-10-03, 5799👍, 65💬
"g++ -shared" to Build Dynamic Library
This section provides a tutorial example on how to use 'g++ -shared' commands to compile your code and to build dynamic library file on Linux systems. 2022-10-02, 119👍, 2💬
"native2ascii -encoding" - UTF-8 to uXXXX Conversion
This section provides a tutorial example on how to convert UTF-8 character strings to \uXXXX Unicode code sequences with the 'native2ascii -encoding' command. 2022-10-01, 1542👍, 4💬
Windows Command - "certutil -encode/-decode"
This section provides a tutorial example on how to use 'certutil -encode' command on a Windows system to perform Base64 encoding and decoding. 2022-09-28, 4817👍, 5💬
PKCS#8/X.509 Private/Public Encoding Standards
This chapter provides tutorial notes and example codes on PKCS#8 and X.509 key encoding standards. Topics include PKCS#8 standard for private key encoding; X.509 standard for public key encoding; PKCS8EncodedKeySpec and X509EncodedKeySpec classes to decode encoded keys; JcaKeyFactoryTest.java test p... 2022-09-26, 119👍, 3💬
ReadParse() - Parsing Web Form Input Values
This section describes functions provided in the CGI library, cgi-bin.pl. It also provides a tutorial example on how to use the ReadParse() to parse Web form input values and other functions. 2022-09-22, 2822👍, 9💬
Running Perl Scripts on Linux Systems
This section provides a tutorial example on how to run Perl scripts on Linux systems. To make a Perl script file executable, you need to add '#!/usr/bin/perl' to the beginning of the script. 2022-09-14, 46792👍, 10💬
Bitcoin Tutorials - Herong's Tutorial Examples
This book is a collection of tutorial examples on Bitcoin and blockchain. Topics include Blockchain, Bitcoin, Cryptocurrency, Merkle Tree, Mining, SHA256, Wallet. Key sections include: What is Bitcoin, What is blockchain, Bitcoin market value, Browsing Bitcoin data blocks on blockchain.com, Browsing... 2022-09-14, 3536👍, 9💬
Android Tutorials - Herong's Tutorial Examples
his book is a collection of notes and sample codes written by the author while he was learning Android system. Topics include Installing of Android SDK R24 on Windows, Creating and running Android emulators, Developing First Android Application - HelloAndroid, Creating Android Project with 'android'... 2022-09-14, 5260👍, 5💬
This section provides a quick introduction of the UTF-16LE (Unicode Transformation Format - 16-bit Little Endian) encoding for Unicode character set. UTF-16LE is a variation of UTF-16. 2022-09-13, 19393👍, 20💬
serialver - serialVersionUID Generator
This chapter provides provides a tutorial example on how to use 'serialver' command to generate a unique 'serialVersionUID' value for any given serializable Java class. 2022-09-12, 450👍, 2💬
Escaping 'script' Tags in String Literals
10E60: Rumi Numeral Symbols
This section provides a quick summary of the Unicode code point block: 'Rumi Numeral Symbols', which contains 32 code points to represent Rumi numeral symbols used in the Arabic language. 2022-09-08, 136👍, 4💬
1937 - He Ri Jun Zai Lai (ä½•æ—¥å›å†æ¥) - When Will You Come Back Again
He Ri Jun Zai Lai (何日君再来) - When Will You Come Back Again, lyrics written by Huang Jiamo (黄嘉谟) in 1937. Music was composed by Liu Xuean (刘雪庵) 2022-09-07, 914👍, 2💬
setEditable() - Use Combo Box as Text Field
This section provides a tutorial example on how to call the setEditable(true) method to use a combo box as a dropdown list and text field at the same time. 2022-09-07, 111👍, 1💬
Crypt::ECB Encryption with No Padding
A tutorial example is provided to show how to use Crypt::ECB to perform encryption with no padding. The plaintext must be multiples of 8-byte blocks. 2022-09-07, 110👍, 1💬
UTF-16, UTF-16BE and UTF-16LE Encodings
This chapter provides notes and tutorial examples on UTF-16, UTF-16BE and UTF-16LE encodings. Topics including encoding and decoding logics of UTF-16, UTF-16BE and UTF-16LE encodings; introduction of surrogate pairs; explanation of the use of BOM (Byte Order Mark). 2022-09-02, 13817👍, 9💬
This section provides a tutorial example on how to use 'Property Let/Set/Get' procedure to define pu...
Chinese New Year Day - The Most Important Chinese Festival Chinese New Year (Chinese: 春節, 春节, Chūn...
This section describes how to create a Chinese HTML document in UTF-8 encoding and publish it on the...
This section provides a quick summary of the Unicode code point block: 'Hangul Syllables', which con...
莫德纳新冠疫苗的结构和工作机制是什么？ 莫德纳新冠疫苗是由ModernaTX, Inc研发的COVID-19疫苗，代号为mRNA -1273。...