Native Tensor support

Robert Eisele robert at
Sun Jan 28 15:54:34 UTC 2018

The capabilities of the language itself are growing with each version. 
It's not that the first version of JavaScript would not be appropriate 
for today's web applications, but since we identify regular patterns in 
a language, we are able to add more layers of abstraction. But not only 
syntactic features can be abstracted to describe what the programmer 
wants with as little code as possible to give the engines more room for 
optimization, also the standard library should get extended. And I mean, 
it gets extended quite a lot - so tensors could be just one of these 

The link of J Decker is a good starting reference

It's not hard to use the features of JavaScript to implement a library 
like this. The hard part is to make an API like this as fast as possible 
to meet future demands for web applications. And this is the purpose of 
a standard library: 1) Providing regular functionalities without the 
need of external dependencies (e.g. libraries) and 2) Making them as 
fast and accurate as possible on a given machine.

And I think all these points make tensors a good fit for Web Assembly.


Am 28.01.18 um 15:08 schrieb Michał Wadas:
> Why should be it included in standard library?
> Are there widely used  libraries providing similar capabilities?
> Why is it preferable to implementing tensor operations in Web Assembly?
> On 27 Jan 2018 2:50 am, "Robert Eisele" <robert at 
> <mailto:robert at>> wrote:
>     Hello,
>     Allocating multi-dimensional arrays in Javascript is only possible
>     by building each dimension individually. In addition to being a
>     very tedious job, a developer has no control over memory usage,
>     which in general is likely to be very high.
>     Seeing an array algebraically as a vector, typed arrays have
>     already created the ability to work more efficiently and
>     memory-consciously with lists of numbers. A natural extension of
>     this is not just a matrix, but a tensor.
>     I would like to suggest tensors as a native language construct in
>     ES. This would have the advantage that developers could write
>     highly parallelizable code independently of WebGL. As an API one
>     could introduce the following classes in analogy to typed arrays:
>     - IntXTensor
>     - UintXTensor
>     - FloatXTensor
>     Where X is one of {8, 16, 32, 64}. To make these tensor objects
>     really effective, it is necessary to introduce meaningful
>     operations, maybe similar to the features of TensorFlow. I think
>     by introducing tensors in the browser (but also node.js), a wide
>     range of new applications open up. For example, working with deep
>     learning right in the browser or calculating filters on images
>     without having to write shaders for them.
>     The most important thing probably is having a way of storing high
>     dimensional data in the browser without worrying about the memory
>     footprint, even for complex applications.
>     What do you think about it?
>     Robert Eisele
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>     es-discuss at <mailto:es-discuss at>
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