大约有 31,400 项符合查询结果（耗时：0.0503秒） [XML]
What is null in Java?
... false.
It is also the default value (for variables that have them) for all reference types:
JLS 4.12.5 Initial Values of Variables
Each class variable, instance variable, or array component is initialized with a default value when it is created:
For all reference types, the defa...
What is the bower (and npm) version syntax?
...
In a nutshell, the syntax for Bower version numbers (and NPM's) is called SemVer, which is short for 'Semantic Versioning'. You can find documentation for the detailed syntax of SemVer as used in Bower and NPM on the API for the semver parser within Node/npm. You can learn more about the unde...
How can I find unused images and CSS styles in a website? [closed]
...uned up file of the style sheets rather then doing the removal process manually?
– Daniel Sokolowski
Dec 14 '13 at 19:57
...
Can't use NVM from root (or sudo)
...n/{bin,lib,share} /usr/local
The above command is a bit complicated, but all it's doing is copying whatever version of node you have active via nvm into the /usr/local/ directory (where user installed global files should live on a linux VPS) and setting the permissions so that all users can access...
Why does npm install say I have unmet dependencies?
I have a node package. When I run npm install from the package root, it installs a bunch of things, but then prints several error messages that look like this:
...
When/Why to use Cascading in SQL Server?
...
Summary of what I've seen so far:
Some people don't like cascading at all.
Cascade Delete
Cascade Delete may make sense when the semantics of the relationship can involve an exclusive "is part of" description. For example, an OrderLine record is part of its parent order, and OrderLines w...
What does the keyword Set actually do in VBA?
...ould be correct (and it would be in C), but Set A = B | A = &B; is actually correct in VBA (and it would fail in C). In VBA, A = B and Set A = B are BOTH equivalent to C's A = B;! The distinction happens somewhere else.
– Niko O
May 25 at 8:18
...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...f the work can
be avoided. With a slightly smarter
linker than is typically used, it is
possible to remove some of these
inefficiencies. This is discussed in
§6.2.3 and §6.2.5.
Since the report was written in 2006 one would hope that many of the recommendations would have been incorpor...
Git's famous “ERROR: Permission to .git denied to user”
...ount. Are you sure that this is nothing to do with you? GitHub shouldn't allow the same SSH public key to be added to two accounts, since when you are using the git@github.com:... URLs it's identifying the user based on the SSH key. (That this shouldn't be allowed is confirmed here.)
So, I suspe...
Why is Node.js single threaded? [closed]
...rvers every client request is instantiated on a new thread. But in Node.js all the clients run on the same thread (they can even share the same variables!) I understand that I/O operations are event-based so they don't block the main thread loop.
...