APL FUNCTIONAL SYMBOL QUOTE UNDERBAR·U+2358

Character Information

Code Point
U+2358
HEX
2358
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 8D 98
11100010 10001101 10011000
UTF16 (big Endian)
23 58
00100011 01011000
UTF16 (little Endian)
58 23
01011000 00100011
UTF32 (big Endian)
00 00 23 58
00000000 00000000 00100011 01011000
UTF32 (little Endian)
58 23 00 00
01011000 00100011 00000000 00000000
HTML Entity
⍘
URI Encoded
%E2%8D%98

Description

The Unicode character U+2358 is known as the "APL Functional Symbol Quote Underbar" and serves a specific role in digital text, primarily within the field of APL (A Programming Language) programming. APL is a high-level, array programming language developed by Charles H. Laurence and Adam A. Peters in 1962 at the University of Toronto. This unique character, the APL Functional Symbol Quote Underbar, provides an essential function within this language system. It is utilized as a delimiter, demarcating the boundaries of expressions within a larger text sequence. By acting as a functional symbol rather than a literal one, it allows for the efficient and concise representation of complex mathematical, statistical, or scientific concepts in programming code. While this character may not have widespread use beyond the realm of APL, it remains a critical tool for those working within its niche domain, highlighting the importance of Unicode's broad scope and adaptability to accommodate diverse typographical needs across languages and fields.

How to type the symbol on Windows

Hold Alt and type 9048 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+2358. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    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 the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+2358 to binary: 00100011 01011000. Those are the payload bits.

  3. 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 10011000