krey

**Linking with contexts** Consider the following example ```python from traitlets import HasTraits, Int, observe, link import ipywidgets as widgets class Model(HasTraits): value = Int() @observe('value') def _on_value(self, change): raise RuntimeError...

**Adding a Lock pattern** The lock pattern is used internally in traitlets for cross validation, as well as in linking, as mentioned above. It's also useful in building traitlets models....

@rmorshea I'm interested in addressing the following properties of `link` and `dlink` (copied from the original post): 1. They are not compatible with Output widgets, making debugging a lot harder,...

Thanks @martinRenou `numeric_format` seems useful. I'd also like to replace non-numeric inputs with the empty string. I tried to replicate the issue using core widgets (`Select.options` instead of `Cell.value`) but...

Another example: `In[0]:` ```python import ipywidgets as widgets import ipysheet sheet = ipysheet.Sheet(rows=1, columns=2) sheet.cells = ( ipysheet.Cell(value=[""], row_start=0, row_end=0, column_start=0, column_end=0, squeeze_column=False), ipysheet.Cell(value=[""], row_start=0, row_end=0, column_start=1, column_end=1, squeeze_column=False) )...

Is there a way to force a fixed number of digits? If I type 2.1 into a cell with `numeric_format='0.00'` I still get 2.1, not 2.10

Very sorry Martin, was using the wrong env when I wrote https://github.com/QuantStack/ipysheet/issues/92#issuecomment-473959949

Just throwing in another use case: I'm doing multioutput regression and there are some missing values y

Hi c01o Thanks for the PR and sorry that I'm just getting around to taking a look. Am I correct in understanding that the purpose of this PR is to...

I think what you're saying makes sense, but I don't have any experience with these tools, I'm sorry. I only ever use 1 container, which I'm start/stop manually, so I...