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How do I use the conditional operator (? :) in Ruby?
How is the conditional operator ( ? : ) used in Ruby?
7 Answers
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What should my Objective-C singleton look like? [closed]
My singleton accessor method is usually some variant of:
26 Answers
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Automate ssh-keygen -t rsa so it does not ask for a passphrase
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To generate a SSH keypair without being prompted for a passphrase you can do the following:
$ ssh-keygen -f id_rsa -t rsa -N ''
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Check if element exists in jQuery [duplicate]
...need the hash (#) e.g. document.getElementById('id_here') , however when using jQuery, you do need to put hash to target elements based on id just like CSS.
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Is it possible to use argsort in descending order?
Consider the following code:
9 Answers
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Javascript : Send JSON Object with Ajax?
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With jQuery:
$.post("test.php", { json_string:JSON.stringify({name:"John", time:"2pm"}) });
Without jQuery:
var xmlhttp = new XMLHttpRequest(); // new HttpRequest instance
xmlhttp.open("POST", "/json-handler");
xmlhttp.setRequestHeader("Content-Type", "applicat...
How to correctly use “section” tag in HTML5?
I'm trying to build a layout in HTML5 and after reading several different articles I'm just confused. I'm trying to get some input on how it should be used.
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In which order do CSS stylesheets override?
In an HTML header, I've got this:
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Update data in ListFragment as part of ViewPager
I'm using the v4 compatibility ViewPager in Android. My FragmentActivity has a bunch of data which is to be displayed in different ways on different pages in my ViewPager. So far I just have 3 instances of the same ListFragment, but in the future I will have 3 instances of different ListFragments....
ERROR: permission denied for sequence cities_id_seq using Postgres
I'm new at postgres (and at database info systems all in all). I ran following sql script on my database:
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