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How to tell if UIViewController's view is visible
...visible, so check the main view in the view controller:
Invoking the view method causes the view to load (if it is not loaded) which is unnecessary and may be undesirable. It would be better to check first to see if it is already loaded. I've added the call to isViewLoaded to avoid this problem.
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Can you explain the concept of streams?
...a stream is a representation of a sequence of bytes. Each stream provides means for reading and writing bytes to its given backing store. But what is the point of the stream? Why isn't the backing store itself what we interact with?
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How to remove folders with a certain name
In Linux, how do I remove folders with a certain name which are nested deep in a folder hierarchy?
11 Answers
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Saving enum from select in Rails 4.1
...ys.to_a
Which generated the following HTML:
<select id="wine_color" name="wine[color]">
<option value=""></option>
<option value="red">red</option>
<option value="white">white</option>
<option value="sparkling">sparkling</option>
</s...
What is Hindley-Milner?
... encountered this term Hindley-Milner , and I'm not sure if grasp what it means.
3 Answers
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How can I get the ID of an element using jQuery?
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The jQuery way:
$('#test').attr('id')
In your example:
$(document).ready(function() {
console.log($('#test').attr('id'));
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="test"></div>
Or through ...
MongoDB logging all queries
...profile.find().pretty()
Source: http://docs.mongodb.org/manual/reference/method/db.setProfilingLevel/
db.setProfilingLevel(2) means "log all operations".
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How to remove an element slowly with jQuery?
$target.remove() can remove the element,but now I want the process to be down with some feel animation,how to do it?
8 Ans...
Remove a HTML tag but keep the innerHtml
I have some simple HTML which I need to strip simple formatting.
7 Answers
7
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