Remove Grid Columns Dynamically in Extjs 4

Code snippet for removing columns in real time from an Extjs 4 grid.

var myComp = myGrid.headerCt.getComponent(colIdForRemoval);
myGrid.headerCt.remove(myComp);
myGrid.getView().refresh();

When you create the columns in the grid you will need to specify an id: even when you are using a dataindex:

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