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Uncheck all mat angular check boxes in a mat angular table without adding any new column into the data set - Stack Overflow
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How to use the indeterminate checkbox in Angular or in any other framework? | by Vikas Kohli | Medium
![Testing]: Mat checkbox doesn't change its state on click · Issue #18129 · angular/components · GitHub Testing]: Mat checkbox doesn't change its state on click · Issue #18129 · angular/components · GitHub](https://user-images.githubusercontent.com/13006107/71989192-33944d00-31ff-11ea-8314-94c897410479.gif)
Testing]: Mat checkbox doesn't change its state on click · Issue #18129 · angular/components · GitHub
![Selected yet disabled individual options from checkboxes element don't persist through save [#2911473] | Drupal.org Selected yet disabled individual options from checkboxes element don't persist through save [#2911473] | Drupal.org](https://www.drupal.org/files/issues/screenshot_2_7.png)