大约有 40,000 项符合查询结果（耗时：0.0343秒） [XML]
Java EE web development, where do I start and what skills do I need? [closed]
...ou'd like to pick another, e.g. WildFly, TomEE, Payara, Liberty, WebLogic, etc. Otherwise you have to use Spring instead of Java EE. It's namely not possible to install EJB in a barebones servlet container without modifying the core engine, you'd in case of Tomcat basically be reinventing TomEE. See...
What does default(object); do in C#?
...he requested type.
For all reference types (defined with class, delegate, etc), this is null. For value types (defined with struct, enum, etc) it's an all-zeroes value (for example, int 0, DateTime 0001-01-01 00:00:00, etc).
It's mostly used with generic code that can be applied to both reference ...
Do you put unit tests in same project or another project?
...Doing it this way results in the actual bits being separated for shipping, etc. Additionally, it is fairly trivial to run automated unit testing at this point on all tests in a particular directory.
To summarize, here is the general idea for a daily build and testing and shipping of bits and other...
What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
... rendering (such as planes, AABB, quatenrions with multiple interpolation, etc) that aren't in any other packages. Very low memory overhead, quite fast, easy to use.
Downsides: API is very focused specifically on rendering and graphics. Doesn't include general purpose (NxM) matrices, matrix decom...
java.net.UnknownHostException: Invalid hostname for server: local
...ping: cannot resolve myHostName: Unknown host then add an entry into your /etc/hosts file.
For that edit /etc/hosts file and add following:
127.0.0.1 myHostName
Hope it helps.
share
|
impr...
How to configure postgresql for the first time?
...th encrypted password 'xxxxxxx';
Edit the pg_hba.conf file:
sudo vim /etc/postgresql/9.1/main/pg_hba.conf
and change "peer" to "md5" on the line concerning postgres:
local all postgres peer md5
To know what version of postgresql you are running, look for the...
How do I uniquely identify computers visiting my web site?
... stuck.
Validation. You need to guard against spoofing, session hijacking, etc.
Even if there are ways to track a computer without using cookies there will always be a way to bypass it and software that will do this automatically. If you really need to track something based on a computer you will ...
RESTful way to create multiple items in one request
...t to a user, updating other related data, initiating a long lived process, etc. For example, we could map a file system or even the unix ps command as a REST API.
I think it is safe to assume that operating a resource may also mean to create several other entities as a side effect.
...
How do I check whether a file exists without exceptions?
... exists(). Here is some simple REPL output:
>>> os.path.isfile("/etc/password.txt")
True
>>> os.path.isfile("/etc")
False
>>> os.path.isfile("/does/not/exist")
False
>>> os.path.exists("/etc/password.txt")
True
>>> os.path.exists("/etc")
True
>>>...
Pelican 3.3 pelican-quickstart error “ValueError: unknown locale: UTF-8”
...hange to another Login user. So we need to change the file like:
sudo vi /etc/profile or sudo vi /etc/bashrc
And then add the two line in the following files
export LC_ALL="en_US.UTF-8"
export LANG="en_US.UTF-8"
Remember do not miss one of them, it doesn't work for me just $LANG or $LC_ALL. Af...