In Angular 2 Material mdTable, how can I load a dynamic number of columns? -


my data structured this, pre-known columns, number of question columns dynamic (but within 1 report have same number of columns). example has 2 question columns, 10:

[    {name: "bob", results: [         {questionnumber: 1, iscorrect: true},         {questionnumber: 2, iscorrect: false}]},   {name: "charlie", results: [         {questionnumber: 1, iscorrect: false},         {questionnumber: 2, iscorrect: false}]}, ]

how define mdtable can handle number of columns?

i tried willshowell's example on page couldn't work. defines interface doesn't work unknown number of columns (i think): https://github.com/angular/material2/issues/5927


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