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Selectors in Objective-C?

First, I'm not sure I really understand what a selector is. From my understanding, it's the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation? ...
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How can I sort a List alphabetically?

...t; object that contains country names. How can I sort this list alphabetically? 13 Answers ...
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Android Studio doesn't see device

...ou toggle what the project builds to. If you're importing a project it actually defaults to Emulator, not sure why. You can also select "Open Select Deployment Target Dialog" to list both connected as well as emulated devices. ...
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Problem with converting int to string in Linq to entities

... If you call AsEnumerable you will pay a high performance price on larger databases because it will bring everything in memory. IEnumerable is slower in comparison with IQueryable because the later is executed exclusively in the data...
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What can be the reasons of connection refused errors?

...estination machine, but its backlog of pending connections is full. A firewall between the client and server is blocking access (also check local firewalls). After checking for firewalls and that the port is open, use telnet to connect to the ip/port to test connectivity. This removes any potentia...
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Is there a best practice for generating html with javascript

I'm calling a web service that returns an array of objects in JSON. I want to take those objects and populate a div with HTML. Let's say each object contains a url and a name. ...
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Using cURL with a username and password?

... @CristianVrabie Technically correct, but incorrect if you're running it from an automated script that doesn't allow prompts. Would be curious about a solution to that problem. – Ligemer Mar 12 '14 at 23:29 ...
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What is the simplest way to get indented XML with line breaks from XmlDocument?

...y already has everything nicely indented with line breaks. However, if I call LoadXml on some very "compressed" XML (no line breaks or indention) then the output of OuterXml stays that way. So ... ...
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Error during SSL Handshake with remote server

...n docker, reverse proxy & web server. This error started happening for all my websites all of a sudden after 1 year. When setting up earlier, I generated a self signed certificate on the web server. So, I had to generate the SSL certificate again and it started working... openssl req -x509 -no...
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How do you automatically set the focus to a textbox when a web page loads?

How do you automatically set the focus to a textbox when a web page loads? 13 Answers ...