Add the ToNumber preprocess layer.

[brightcoder01]

No description provided.

[terrytangyuan]

Is it really necessary to add this to elasticdl? The preprocessing layers seem so simple and I think they should be in examples instead.

[brightcoder01]

Is it really necessary to add this to elasticdl? The preprocessing layers seem so simple and I think they should be in examples instead.

Good question.
The layers is useful for the code_gen of SQLFlow transform expression and can be imported directly in the generated code. If not, I'm afraid we should generate this piece of code multiple times.

[terrytangyuan]

@brightcoder01 Sure but maybe this can be moved to examples instead of a module/folder?

[brightcoder01]

@brightcoder01 Sure but maybe this can be moved to examples instead of a module/folder?

Good suggestion. We will add a model example for all the preprocessing layers after submitting all the layers.