Lamp

⍝ — Comment Indicator — Keystroke ALT+, (Comma) — Character 9053 or x235D

Alternate Names

This symbol is also known as comment or APL text symbol {comment} .

Usage

The lamp symbol ⍝ is used to add a comment to a typed-in line, whether an immediate execution statement given to the Session Manager or entered into the text of a function. All characters after ⍝ are ignored until the end of the line. The diamond (⋄) operator cannot be used to start a new line after a ⍝ symbol is used.

Example

      yes←10 ⋄ yes←20

      yes

20

      yes←10 ⍝ more ⋄ yes←20

      yes

10

See Also
System Commands	System Variables and Functions	Operators

Keyboard

A+S

⍪

≡

≢

⍒

⍋

⌽

⍉

⊖

⍟

⍱

⍲

⍠

⌹

Alt

⋄

¨

¯

<

≤

∅

≥

>

≠

∨

∧

×

÷

Sh

~

!

@

#

$

%

^

&

*

(

)

_

+

Key

`

1

2

3

4

5

6

7

8

9

0

-

=

A+S

⍷

√

⍨

⍸

⍥

⍣

⍞

⍬

⊣

Alt

?

⍵

∊

⍴

§

↑

↓

⍳

○

π

←

→

⊢

Sh

Q

W

E

R

T

Y

U

I

O

P

{

}

|

Key

q

w

e

r

t

y

u

i

o

p

[

]

\

A+S

∫

∂

⌻

⍢

⍙

⍤

⍫

⌷

Alt

⍺

⌈

⌊

∞

∇

∆

∘

‼

⎕

⍎

⍕

Sh

A

S

D

F

G

H

J

K

L

:

"

Key

a

s

d

f

g

h

j

k

l

;

'

A+S

⊆

⊇

χ

⍡

⍭

⊙

Alt

⊂

⊃

∩

∪

⊥

⊤

⍦

⍝

⍀

⌿

Sh

Z

X

C

V

B

N

M

<

>

?

Key

z

x

c

v

b

n

m

,

.

/

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-

×

÷

*

⍟

⌹

○

!

?

√

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-

×

÷

*

⍟

⌹

○

!

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√

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⌈

⌊

⊥

⊤

⊣

⊢

⌈

⌊

⊥

⊤

⊣

⊢

≢

<

≤

=

≥

>

≠

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≢

<

≤

=

≥

>

≠

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∧

⍱

⍲

bgcolor=cyan

title="down caret" |∨

∧

⍱

⍲

}} {{#ifeq:{{{1}}}|6||title="take" style="border-width:thick; border-color:blue; background-color:yellow;" |↑

↓

⊂

⊃

⌷

⍋

⍒

↓

⊂

⊃

⌷

⍋

⍒

∊

⍸

⍷

∪

∩

⊆

⊇

~

§

π

..

bgcolor=cyan

title="iota" |⍳

∊

⍸

⍷

∪

∩

⊆

⊇

~

§

π

..

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⍪

⍴

⌽

⊖

⍉

⍪

⍴

⌽

⊖

⍉

\

⌿

⍀

⊙

¨

⍨

⍤

⍡

⍥

⍦

.

∘

⍠

‼

⌻

∂

∫

bgcolor=cyan

title="slash" |/

\

⌿

⍀

⊙

¨

⍨

⍤

⍣

⍡

⍥

⍦

.

∘

⍠

‼

⌻

∂

∫

}} {{#ifeq:{{{1}}}|10||title="quotequad" style="border-width:thick; border-color:blue; background-color:yellow;" |⍞

⎕

⍎

⍕

⎕

⍎

⍕

⍝

∇

∆

⍙

_

⍺

⍵

bgcolor=cyan

title="diamond" |⋄

⍝

∇

∆

⍙

_

⍺

⍵

}} {{#ifeq:{{{1}}}|12||title="neg" style="border-width:thick; border-color:blue; background-color:yellow;" |¯

⍬

∞

title="neg" |¯

⍬

∞

∅

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a

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g

p

r

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x

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