image
Returns the image of a given sequence of arguments under a specified function.
Syntax

image(f[, x1[, ...]])

f
is a function 
x1
, ... are any objects

Description
image(f, x1, ...)
returns the image of x1
, ... under f
. That is,
image(f, x1, ...) = f(x1, ...).
Notes
The image
function is implicitly used when functions are dynamically invoked via function objects in expressions. For instance, while sin(x)
is parsed as sin
applied to x
, (sin)(x)
is parsed as image
applied to the function object sin
and x
. Also, all custom functions are invoked dynamically, so if f ≔ n ↦ n^2 + 1
, then f(2)
will be parsed as image
applied to f
and 2
.
Examples
F ≔ '(RandomReal, RandomColor)
RandomReal RandomColor
F @ image
0.215863296064 rgba(0.224, 0.023, 0.178, 1.000)
F @ (f ↦ f())
0.824463125551 rgba(0.035, 0.278, 0.275, 1.000)