U+2359 "⍙" Apl Functional Symbol Delta Underbar Unicode Character
Unicode Version 17.0
⍙
U+2359 "⍙" Apl Functional Symbol Delta Underbar is a specialized glyph used within the APL programming language to represent a specific operation or function, typically indicating a modified or derivative version of the standard delta symbol, often associated with concepts like change, difference, or vector operations. Its name, "Delta Underbar," refers to the visual design where the traditional Greek delta shape is combined with an underscore or line beneath it, distinguishing it from similar symbols in the APL character set. This character belongs to the "Miscellaneous Technical" block of Unicode and is employed primarily in technical and mathematical computing contexts where APL code is written or displayed.
General Properties
| Code Point | U+2359 |
| Version Added | 1.1 |
| Name | Apl Functional Symbol Delta Underbar |
| Block | Miscellaneous Technical |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | ⍙ |
| HTML Hex Encoding | ⍙ |
| UTF-8 Encoding | 0xE2 0x8D 0x99 |
| UTF-16 Encoding | 0x2359 |
| UTF-32 Encoding | 0x00002359 |
| C/C++/Java Escape | \u2359 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |