What ⍫ means
You can use the function without seeing how it works.
A function is a named set of instructions that performs a task. In traditional APL notation, , called del, marks the beginning and end of a function definition. The protected form ⍫ is associated with locking that definition while leaving the function available to run. The exact locking procedure depends on the APL system.
This lets someone provide a working function while keeping its source code—the written instructions—out of view. The 1968 APL/360 manual describes protection for proprietary functions and teaching uses. Typing ⍫ in an ordinary document does not protect the document.
Part of the collection
Don't confuse it with
1
More like this
10
How to type or find ⍫
- Also called
- del-tilde · protected del
- Search it as
- APL locked function
- Shows up in
- Anything that takes text · its shape is whatever your font draws
Windows (Word)
Windows
macOS
HTML
⍫CSS
\236BMicrosoft Word on Windows
Type 236B, then press AltX to turn the code into ⍫.
Codes and encoding1 code points
HTML decimal
⍫
HTML hex
⍫
CSS content
content: "\236B";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%8D%AB
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.