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https://issues.apache.org/jira/browse/ARROW-2767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16529304#comment-16529304
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Brian Hulette edited comment on ARROW-2767 at 7/2/18 1:11 AM:
--------------------------------------------------------------
We could also do
{code:javascript}
class Table<T extends {[name: string]: any}> {
...
getColumn(name: keyof T): Vector<T[name]> {
}
...
}
{code}
Although I'm not sure the {{T[name]}} lookup will actually work.
was (Author: bhulette):
{code:javascript}
class Table<T extends {[name: string]: any}> {
...
getColumn(name: keyof T): Vector<T[name]> {
}
...
}
{code}
Although I'm not sure the {{T[name]}} lookup will actually work.
> [JS] Add generic to Table for column names
> ------------------------------------------
>
> Key: ARROW-2767
> URL: https://issues.apache.org/jira/browse/ARROW-2767
> Project: Apache Arrow
> Issue Type: Improvement
> Components: JavaScript
> Reporter: Brian Hulette
> Priority: Major
>
> Requested by [~domoritz]
> Something like:
> {code:javascript}
> class Table<ColName extends string = string> {
> ...
> getColumn(name: ColName): Vector<any> {
> }
> ...
> }
> {code}
> It would be even better if we could find a way to map the column names to the
> actual vector data types, but one thing at a time.
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