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What is java pojo class, java bean, normal class? [duplicate]
... @firstpostcommenter It might be useful to get a description of what POJO is from the person who coined the term. ("encoding business logic into regular java objects rather than using Entity Beans"). In other words, POJO was a name to given to describe "plain old java objects" in order t...
What is &&& operation in C
...s. Example: void fn(type& x = *reinterpret_cast<type*>(NULL)); What is the value of &x in fn if fn is called without parameters? It's 0 a.k.a. false. However, using it the way described, it'll always be true unless i == 0, and if one was using it as I described, it would be c = &am...
How to log in to phpMyAdmin with WAMP, what is the username and password?
What does the word "root" mean in phpMyAdmin ?
6 Answers
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what is Segmentation fault (core dumped)? [duplicate]
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Yeah, I just thought I'd mention it because that's what I use:)
– Will Hopkins
Jul 13 '17 at 22:54
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What does %>% mean in R [duplicate]
...ence the reference to Magritte's famous painting The Treachery of Images.
What the function does is to pass the left hand side of the operator to the first argument of the right hand side of the operator. In the following example, the data frame iris gets passed to head():
library(magrittr)
iris %...
How to send a JSON object over Request with Android?
... Here's a snippet of code I used to send an HTTP POST.
I don't understand what sending the object in a variable named "jason" has to do with anything. If you're not sure what exactly the server wants, consider writing a test program to send various strings to the server until you know what format i...
When should I use the HashSet type?
... it's a set. The only things you can do with a single set is to establish what its members are, and to check whether an item is a member.
Asking if you can retrieve a single element (e.g. set[45]) is misunderstanding the concept of the set. There's no such thing as the 45th element of a set. Ite...
php is null or empty?
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What you're looking for is:
if($variable === NULL) {...}
Note the ===.
When use ==, as you did, PHP treats NULL, false, 0, the empty string, and empty arrays as equal.
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What is the Python equivalent of static variables inside a function?
What is the idiomatic Python equivalent of this C/C++ code?
26 Answers
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C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
C++11 introduced a standardized memory model, but what exactly does that mean? And how is it going to affect C++ programming?
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