The text does not start from the beginning in the “text view”

To start text from the very beginning and not from the middle (as it turns out the default) I found the following code:

<span class="kwd">override</span><span class="pln"> func viewDidLayoutSubviews</span><span class="pun">()</span> <span class="pun">{</span><span class="pln">
    textView</span><span class="pun">.</span><span class="pln">setContentOffset</span><span class="pun">(</span><span class="typ">CGPoint</span><span class="pun">(</span><span class="pln">x</span><span class="pun">:</span> <span class="lit">0</span><span class="pun">,</span><span class="pln"> y</span><span class="pun">:</span> <span class="lit">0</span><span class="pun">),</span><span class="pln"> animated</span><span class="pun">:</span> <span class="kwd">false</span><span class="pun">)</span>
<span class="pun">}</span>

override func viewDidLayoutSubviews() {

textView.setContentOffset(CGPoint(x: 0, y: 0), animated: false)

}

Solution found here: http://stackoverflow.com/a/42746817/7851186

For changing title of button (UIButton) we can use

<span class="pln">button</span><span class="pun">.</span><span class="pln">setTitle</span><span class="pun">(</span><span class="str">"Button Title"</span><span class="pun">,</span><span class="kwd">for</span><span class="pun">:</span> <span class="pun">.</span><span class="pln">normal</span><span class="pun">)</span>

button.setTitle("Button Title",for: .normal)

To make the button unshiftable we can use:

btn.isEnable = false