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Convert a list to a data frame
...of numeric data the numeric data will be coerced to string by matrix() and then both to factor by data.frame().
– Ian Sudbery
Mar 15 '13 at 10:15
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Best way to give a variable a default value (simulate Perl ||, ||= )
... PHP versions is:
$var = $bool or $var = "default";
// If I use it, then only with excessive spaces for clarity.
This works for values that can be evaluated in boolean context. The advantage here is that it also gives you said debug e_notice should the variable be undefined.
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Why should you remove unnecessary C# using directives?
... :-) I am used doing a Organize Usings -> Remove and Sort every now and then. BTW, to me the upper two options in Organize Usings are meaningless. I am talking about VS2013 btw.
– Sнаđошƒаӽ
Sep 6 '16 at 8:34
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How do you get a string to a character array in JavaScript?
... If you use the spread operator in combination with a compiler to ES5 then this wont work in IE. Take that into consideration. It took me hours to figure out what the problem was.
– Stef van den Berg
Jun 21 '17 at 12:06
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PHP function to get the subdomain of a URL
...rst getting the domain name (e.g. sub.example.com => example.co.uk) and then use strstr to get the subdomains.
$testArray = array(
'sub1.sub2.example.co.uk',
'sub1.example.com',
'example.com',
'sub1.sub2.sub3.example.co.uk',
'sub1.sub2.sub3.example.com',
'sub1.sub2.exampl...
jQuery Get Selected Option From Dropdown
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I'd probably favor using .find(':selected') as then it allows you do call it from a callback attached to an event... like $('#aioConceptname').bind('change', function(el) { console.log ( $(el).find(':selected').text() ); });
– Armstrongest
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Android emulator and virtualbox cannot run at same time
...droid/sdk/extras
Install the HAXM packing by opening IntelHAXM_6.1.1.dmg, then opening IntelHAXM_6.1.1.mpkg in the mounted folder, and following the installer instructions.
Follow these steps for Windows:
In Android Studio Go to Tools -> Android -> SDK Manager
Confirm you have the latest ...
Akka or Reactor [closed]
...a real project now and need something which satisfies your first sentence, then I don’t think it would be controversial to recommend Akka at this point (as Jon also noted). Feel free to ask more concrete questions on SO or on the akka-user mailing list.
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How to convert a Map to List in Java?
...u a collection of Map.Entry objects containing both key and value. you can then transform this into any collection object you like, such as new ArrayList(map.entrySet());
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Javascript heredoc
...ient technologies that existed 5 years ago? If the question is still open, then it deserve to take advantage of new technologies as they as created over time. That way, new users having the same issue can find "non-archaeological" information here.
– asiby
Oct ...