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What is the difference between an int and an Integer in Java and C#?
...into an object.
The differences between objects and primitives are somewhat beyond the scope of this question, but to summarize:
Objects provide facilities for polymorphism, are passed by reference (or more accurately have references passed by value), and are allocated from the heap. Conversel...
In Javascript, how to conditionally add a member to an object?
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I prefer the initial solution: easier to figure out what’s going on – I wouldn’t be sure what happens with a primitive value (at least not without looking at the spec).
– Axel Rauschmayer
May 11 '17 at 8:56
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How to install latest version of Node using Brew
...ce. But it mentions 'formulea' - which is just a (frankly) stupid word for what is basically it's 'library of software versions'. I can do 'brew info node' to find out what version it's going to install. It's set to 0.4.0 so I ended up installing from src anyway, but this is right. Thank you.
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Can lambda functions be templated?
...s. (Otherwise the constraints couldn't be checked.) Can foo invoke bar(x)? What constraints does the lambda have (the parameter for it is just a template, after all)?
Concepts weren't ready to tackle this sort of thing; it'd require more stuff like late_check (where the concept wasn't checked until...
How to retrieve the hash for the current commit in Git?
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Adding to what Thane said, you can also add a specific length to --short, such as --short=12, to get a specific number of digits from the hash.
– Tyson Phalp
Feb 21 '14 at 17:18
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Get the full URL in PHP
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What if you're on a https link? What if HTTP_HOST is not available or has been tampered with by client side? This answer seems incomplete and unreliable.
– Manachi
Apr 5 '13 at 2:07
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Is there a Python equivalent of the C# null-coalescing operator?
..., it may even be useful to have this side-effect of Python. Since you know what values evaluates to false, you can use this to trigger the default value without using None specifically (an error object, for example).
In some languages this behavior is referred to as the Elvis operator.
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What is the difference between Amazon S3 and Amazon EC2 instance?
...ke a remote computer running Windows or Linux and on which you can install whatever software you want, including a Web server running PHP code and a database server.
Amazon S3 is just a storage service, typically used to store large binary files. Amazon also has other storage and database services,...
Java 8 stream reverse order
General question: What's the proper way to reverse a stream? Assuming that we don't know what type of elements that stream consists of, what's the generic way to reverse any stream?
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Spring MVC: How to perform validation?
I would like to know what is the cleanest and best way to perform form validation of user inputs. I have seen some developers implement org.springframework.validation.Validator . A question about that: I saw it validates a class. Does the class have to be filled manually with the values from the us...