Step 1: Determine the UTF-8 encoding bit layout
The character ⍊ has the Unicode code point U+234A. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of
0x0800to0xffff.
Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format:1110xxxx 10xxxxxx 10xxxxxx
Where thexare the payload bits.UTF-8 Encoding bit layout by codepoint range Codepoint Range Bytes Bit pattern Payload length U+0000 - U+007F 1 0xxxxxxx 7 bits U+0080 - U+07FF 2 110xxxxx 10xxxxxx 11 bits U+0800 - U+FFFF 3 1110xxxx 10xxxxxx 10xxxxxx 16 bits U+10000 - U+10FFFF 4 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 21 bits Step 2: Obtain the payload bits:
Convert the hexadecimal code point U+234A to binary:
00100011 01001010. Those are the payload bits.Step 3: Fill in the bits to match the bit pattern:
Obtain the final bytes by arranging the paylod bits to match the bit layout:
11100010 10001101 10001010
APL FUNCTIONAL SYMBOL DOWN TACK UNDERBAR·U+234A
⍊
Character Information
Code Point
U+234A
HEX
234A
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 8D 8A | 11100010 10001101 10001010 |
| UTF16 (big Endian) | 23 4A | 00100011 01001010 |
| UTF16 (little Endian) | 4A 23 | 01001010 00100011 |
| UTF32 (big Endian) | 00 00 23 4A | 00000000 00000000 00100011 01001010 |
| UTF32 (little Endian) | 4A 23 00 00 | 01001010 00100011 00000000 00000000 |
HTML Entity
⍊
URI Encoded
%E2%8D%8A
Description
The Unicode character U+234A, known as the APL Functional Symbol Down Tack Underbar, is a specialized typographic symbol primarily used in the programming language A Programming Language (APL). This symbol plays a crucial role in digital text for mathematical expressions and programming within the APL context. The APL language, developed by Alonzo Church and Peter Landin, is a high-level programming language specifically designed for matrix calculations and concise notation. The Down Tack Underbar (U+234A) serves as an operator in APL that performs a specific mathematical operation called 'down tacking', which is used to reverse the order of elements in a list or array, essentially inverting their indices. Although not widely used outside the realm of APL programming, this character is indispensable for the efficient and accurate computation of complex mathematical operations within the APL ecosystem.
How to type the ⍊ symbol on Windows
Hold Alt and type 9034 on the numpad. Or use Character Map.