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Is it safe to delete a NULL pointer?
...ter to NULL after delete (helps avoiding double deletion and other similar m>me m>mory corruption problems).
I'd also love if delete by default was setting the param>me m>ter to NULL like in
#define my_delete(x) {delete x; x = NULL;}
(I know about R and L values, but wouldn't it be nice?)
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Object comparison in JavaScript [duplicate]
...s no perfect way, unless you use _proto_ recursively and access all non-enum>me m>rable properties, but this works in Firefox only.
So the best I can do is to guess usage scenarios.
1) Fast and limited.
Works when you have simple JSON-style objects without m>me m>thods and DOM nodes inside:
JSON.string...
What is the m>me m>mory consumption of an object in Java?
Is the m>me m>mory space consum>me m>d by one object with 100 attributes the sam>me m> as that of 100 objects, with one attribute each?
12...
Android splash screen image sizes to fit all devices
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Disclaim>me m>r
This answer is from 2013 and is seriously outdated. As of Android 3.2 there are now 6 groups of screen density. This answer will be updated as soon as I am able, but with no ETA. Refer to the official docum>me m>ntation for a...
What's the difference between compiled and interpreted language?
After reading som>me m> material on this subject I'm still not sure what the difference between a compiled language and an interpreted language is. I was told this is one of the differences between Java and JavaScript. Would som>me m>one please help m>me m> in understanding it?
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Ruby class instance variable vs. class variable
...nce variable on a class (not on an instance of that class) you can store som>me m>thing common to that class without having sub-classes automatically also get them (and vice-versa). With class variables, you have the convenience of not having to write self.class from an instance object, and (when desirab...
Get the full URL in PHP
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Not much you can do about it, this is the proper m>me m>thod for the question asked.
– Mfoo
Apr 27 '13 at 12:45
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What's is the difference between include and extend in use case diagram?
...n its own, without the extension.
Include is used to extract use case fragm>me m>nts that are duplicated in multiple use cases. The included use case cannot stand alone and the original use case is not complete without the included one. This should be used sparingly and only in cases where the duplica...
How do I get a background location update every n minutes in my iOS application?
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I found a solution to implem>me m>nt this with the help of the Apple Developer Forums:
Specify location background mode
Create an NSTim>me m>r in the background with UIApplication:beginBackgroundTaskWithExpirationHandler:
When n is smaller than UIApplication:b...
How do browser cookie domains work?
...nction between the Domain attribute value and the effective domain: the form>me m>r is taken from the Set-Cookie header field and the latter is the interpretation of that attribute value. According to the RFC 2965, the following should apply:
If the Set-Cookie header field does not have a Domain attrib...