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Test if object implements interface

... called implemented the AboutDialogListener interface before attempting to cast the AboutDialogListener field. public class About extends DialogFragment implements OnClickListener, OnCheckedChangeListener { public static final String FIRST_RUN_ABOUT = "com.gosylvester.bestrides.firstrunabout";...
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Is there a simple way to convert C++ enum to string?

...(temp.str()); \ os << enumName << "::" << strings[static_cast<int>(value)]; \ return os;} To use this in your code, simply do: AWESOME_MAKE_ENUM(Animal, DOG, CAT, HORSE ); share ...
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Comparing mongoose _id and strings

...ds by using the equals method. Instead, it would make more sense to always cast to string and compare the keys. Here's an example answer in case if you need to use indexOf() to check within an array of references for a specific id. assume query is a query you are executing, assume someModel is a m...
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Is there a VB.NET equivalent for C#'s '??' operator?

... +1 for providing an implementation using generics and avoiding type casting/boxing/unboxing – ulty4life Dec 10 '13 at 22:54 4 ...
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Get margin of a View

...iewGroup and the parent was a ViewGroup as well. In most cases, you should cast your layout params to the parent's View class LayoutParams (in this case it's ViewGroup and RelativeLayout) share | im...
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Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?

...ject from 0 which is an integer. 0 == False returns True because False is cast to an integer. int(False) returns 0 The python documentation of the == operator says (help('==')): The operators <, >, ==, >=, <=, and != compare the values of two objects. The objects need not have the...
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Preferred Java way to ping an HTTP URL for availability

...pose this is a GET request. Is there a way to send HEAD instead? You can cast the obtained URLConnection to HttpURLConnection and then use setRequestMethod() to set the request method. However, you need to take into account that some poor webapps or homegrown servers may return HTTP 405 error for ...
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How to check for an undefined or null variable in JavaScript?

...s the truthiness. Which FYI is also equivalent to if (var) which will be cast to boolean, so basically completely useless... – Cyril CHAPON Jun 26 '18 at 9:42 ...
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Where is the itoa function in Linux?

... point string; floating point can have corner case inaccuracies. And don't cast calloc – M.M Sep 24 '14 at 12:44 ...
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How do I format a Microsoft JSON date?

...t - the +a[1] etc represents the array pieces of the regex and the + would cast it to a number, so +a[1] equals 2009 etc. Here is the array breakdown: 0: "2009-04-12T20:44:55" 1: "2009" 2: "04" 3: "12" 4: "20" 5: "44" 6: "55" – Jason Jong Mar 25 at 11:57 ...