Symbol Epsilon

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∊ — is an Element of — Keystroke is usually Alt-e; Character(⎕UCS) 8714

Usage

Examples

      5 ∊ 1 2 3 4 5    ⍝ determine if 5 is an element of the set of numbers from 1 through 5, result just below 1 = Yes or true, so 5 IS an element of 1 through 5.
1

      1 2 3 4 5 ∊ 5    ⍝ determine if the set of numbers from 1 through 5 contains the integer 5. Results 0=False, 1=True
0 0 0 0 1 

      (⍳5) ∊ 5      ⍝ determine if the set of numbers from 1 through 5 (iota 5) contains the integer 5.
0 0 0 0 1 

      'this is text' ∊ 't'      ⍝ determine if a text phrase contains the letter 't', 1=True, 0=False
1 0 0 0 0 0 0 0 1 0 0 1 

See Also

NARS 2000 Lang
Tool
Bar
+ - × ÷ * ! ? |
= < >
~ § π .. ,
/ \ ¨ .
_ ¯ Ø b e g p r v x