Angular - Filter to remove blank strings from array

Question

I have an object of arrays... The array can contain blanks, how can i create an ANgular filter to remove the blanks to determine the length of the array?

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Answer 1

The other answers didn't work for me and angular-filter doesn't have any specific abilities for this case, but the following worked in my Angular app. No custom filter needed.

arr = ["", "foo", "bar"];
arr.filter(Boolean);

Browser compatability: http://kangax.github.io/compat-table/es5/#Array.prototype.filter