APL Functional Symbol Epsilon Underbar Symbol
⍷ is an APL functional symbol used for searching and matching within arrays or text.
U+2377
⍷ is an APL function symbol most often used when you want to find matches inside an array or string. It’s commonly seen in APL code for pattern-style lookups and membership checks. Below you’ll find practical copy options and usage examples.
Apl Functional Symbol Epsilon Underbar Symbol Meaning
In APL, ⍷ (epsilon underbar) is used for searching and matching. Depending on how you structure the left and right arguments, it helps determine where a value (or pattern) appears within a larger array or within text-like data. In many APL problems, it’s used to locate occurrences and produce results such as booleans or positional information that you can use for filtering or follow-up operations. If you’re reading existing APL code, ⍷ typically signals that the expression is performing a “find/match” operation rather than a simple arithmetic or transformation.
Common uses
- •Finding where a value or pattern occurs within an array
- •Checking membership/matches across string-like data in APL
- •Building filtered results based on where matches exist
- •Locating occurrences to extract or summarize data positions
- •Writing compact APL expressions for search-style logic
Examples
⍷ APL Functional Symbol Epsilon Underbar
- ⍷⍳ 'hello' ⍷ 'xhello y' ⍝ match within text
- ⍷'apl' ⍷ 'a p l' ⍝ check match across a sequence
- ⍷(2 4 6) ⍷ (1 2 3 4 5 6) ⍝ locate matches in a list
- ⍷'cat' ⍷ 'concatenate' ⍝ detect substring match
- ⍷('a' 'b') ⍷ 'abacad' ⍝ match multiple elements
Variations
Ready to copy
Technical codes
| Unicode | U+2377 | |
| HTML Entity | ⍷ | |
| HTML Code | ⍷ | |
| CSS | \2377 | |
| Alt Code | Alt + 9079 | |
| Decimal | 9079 |
How to type APL Functional Symbol Epsilon Underbar Symbol (⍷)
On Windows
Hold Alt and type 9079 on the numeric keypad. In Word, type 2377 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2377. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2377, then press Enter or Space.
Anywhere
Copy ⍷ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What is ⍷ called?
It’s commonly referred to as the APL Functional Symbol Epsilon Underbar.
What does ⍷ do in APL?
In APL, ⍷ is used for searching and matching—helping you find where a value or pattern appears within a larger array or text-like data.
How do I copy ⍷ into my code or document?
You can paste the character directly (⍷) or use the provided escapes such as HTML ⍷, CSS \\2377, or JavaScript \\u{2377}.
Where would I see ⍷ most often?
It’s most often seen in APL code involving “find/match” logic, such as matching within strings or searching within arrays.