Get text from string by line.

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Autolayout for UITableView's tableHeaderView.

Make tableHeaderView frame with constraints.

Let's make code run once.

Make code run only once with lazy Properties.

Get permanent facebook page access token.

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UIDeviceOrientationDidChange timing issue..?

In inital ViewContoller UIDeviceOrientationDidChange with rxSwift has might be some glitch...

Let's make calander event & reminder.

How to make calander event & reminder.