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Why the switch statement cannot be applied on strings?
...e reason why has to do with the type system. C/C++ doesn't really support strings as a type. It does support the idea of a constant char array but it doesn't really fully understand the notion of a string.
In order to generate the code for a switch statement the compiler must understand what it...
How do I include a file over 2 directories back?
... since it has only disadvantages. Or (the third alternative) you could use string manipulation to extract parent directory from the (expanded) current path but once again this doesn’t have any advantages to using relative paths.
– Konrad Rudolph
Aug 20 '12 at...
What does “Could not find or load main class” mean?
...with signature, return type and modifiers given by public static void main(String[]). (Note, the method argument's name is NOT part of the signature.)
Call that method passing it the command line arguments ("fred", "joe", "bert") as a String[].
Reasons why Java cannot find the class
When you get...
Setting an object to null vs Dispose()
...ode) to know when you're not going to use a reference again. For example:
StringBuilder sb = new StringBuilder();
sb.Append("Foo");
string x = sb.ToString();
// The string and StringBuilder are already eligible
// for garbage collection here!
int y = 10;
DoSomething(y);
// These aren't helping at...
Regex empty string or email
...ex email validation in SO but I did not find any that will accept an empty string. Is this possible through Regex only? Accepting either empty string or email only? I want to have this on Regex only.
...
What is the difference between JDK dynamic proxy and CGLib?
...ies. Another distinction is in the "stack" cost. A JDK proxy always incurs extra stack frames per call while a CGLib may not cost any extra stack frames. This becomes increasingly relevant the more complex the app gets (because the larger the stack, the more memory threads consume).
...
Detecting iOS / Android Operating system
...
You can test the user agent string:
/**
* Determine the mobile operating system.
* This function returns one of 'iOS', 'Android', 'Windows Phone', or 'unknown'.
*
* @returns {String}
*/
function getMobileOperatingSystem() {
var userAgent = navig...
What is the best way to find the users home directory in Java?
... using it, getting the appropriate environment variable with System.getenv(String).
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Setting element of array from Twig
.../github.com/twigphp/Twig/issues/789 ).
That will work only when keys are strings
What I did is recreate another table ( temp) from the initial table (t) and make the keys a string , for example :
{% for key , value in t%}
{% set temp= temp|merge({(key~'_'):value}) %}
{% endfor %}
t keys : 0...
Download file from an ASP.NET Web API method using AngularJS
... return new HttpResponseMessage(HttpStatusCode.BadRequest);
string path = ConfigurationManager.AppSettings["QRFolder"] + + QRFile.QRId + @"\" + QRFile.FileName;
if (!File.Exists(path))
return new HttpResponseMessage(HttpStatusCode.BadRequest);
HttpResponse...