Is there a way to pretty print a tensor ?

[sreeramcoder]

Hello,

For the sample input

(display (+ (tensor 2) (tensor 7)))
The output is as below.

#(#(#<procedure:dual> 9 #<procedure:...utodiff/B-prims.rkt:20:10>))

Is there a function available in the library to pretty print the tensor ?

For nested tensors, it might be helpful to just print the values.

Thank you,
Sreeram

[themetaschemer]

Hi Sreeram, sorry I missed this question of yours. When you load malt, it should automatically adjust the printing ports so that the output of tensors is properly printed. Are you printing to another port? See, for example, the output that I get:

(require malt)
> (display (+ (tensor 2) (tensor 7)))
(display (+ (tensor 2) (tensor 7)))
(tensor 9)

[sreeramcoder]

Hi,

I am seeing that this error occurs only when using malt/learner and after using a extended function.

For e.g., below is a minimal example to replicate the issue.

(base) sreeram@localhost ~/prog/ll $ cat test.rkt
#lang racket

(require malt/learner)

(define T (tensor 1 2 3))

(display (sqr T))

(base) sreeram@localhost ~/prog/ll $ racket test.rkt
#(#(#<procedure:dual> 1 #<procedure:...utodiff/B-prims.rkt:20:10>) #(#<procedure:dual> 4 #<procedure:...utodiff/B-prims.rkt:20:10>) #(#<procedure:dual> 9 #<procedure:...utodiff/B-prims.rkt:20:10>))

Below works fine.

(base) sreeram@localhost ~/prog/ll $ cat test-2.rkt 
#lang racket

(require malt)

(define T (tensor 1 2 3))

(display (sqr T))

(base) sreeram@localhost ~/prog/ll $ racket test-2.rkt 
(tensor 1 4 9)

[themetaschemer]

Yes, that might be the issue. Let me investigate.

[themetaschemer]

I will push a fix for this, but in the meantime, here's a suggested workaround:

(require malt/learner)
(require malt/ports)
(printable-maker make-printable)

This should give you the following:

> (+ (tensor 1 2 3) (tensor 4 5 7))
(tensor 5 7 10)

[sreeramcoder]

Thank you !