大约有 30,000 项符合查询结果（耗时：0.0407秒） [XML]
Why is DarkGray lighter than Gray?
...ray is defined as #808080 in HTML, but DarkGray is represented as #A9A9A9, meaning that they're the wrong way around. Since WPF allows the same named colours as HTML for compatibility, the result is that the same idiosyncrasies carry forward. (You can find more information on the full set of X11 col...
How to open a file for both reading and writing?
...ssefHarush Note that the documentation for a states 'on some Unix systems, means that all writes append to the end of the file regardless of the current seek position'. In this case the f.seek(0) won't work as expected. I just fell foul of this on Linux.
– Graeme
...
What is the “realm” in basic authentication
...found this page on the php manual showing the set up. What does "realm" mean here in the header?
3 Answers
...
Difference between \A \z and ^ $ in Ruby regular expressions
...use \A and \z. ^ and $ will only match up until a newline character, which means they could use an email like me@example.com\n<script>dangerous_stuff();</script> and still have it validate, since the regex only sees everything before the \n.
My recommendation would just be completely st...
In the shell, what does “ 2>&1 ” mean?
...
@Dominik: Nope, & is only interpreted to mean "file descriptor" in the context of redirections. Writing command &2>& is parsed as command & and 2>&1, i.e. "run command in the background, then run the command 2 and redirect its stdout into its ...
Difference between Document-based and Key/Value-based databases?
... the database can
understand (i.e. JSON, XML etc). In most doc dbs, that means that we
can now allow queries on the document data.
share
|
improve this answer
|
follow
...
Difference between CouchDB and Couchbase
... on Apache CouchDB and later changed its name to CouchOne (by "its name" I mean the company name - not the database name).
CouchOne (formerly CouchIO) merged with Membase (formerly NorthScale) to form a new company called Couchbase. Membase (the company) developed Membase (a product of the same nam...
What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...the Exception you will have to do this:
begin
rescue Exception
end
This means that in a sense, an Exception is a "worse" error than a RuntimeError, because you have to do more work to recover from it.
So which you want depends on how your project does its error handling. For instance, in our dae...
Vagrant stuck connection timeout retrying
...PC (no warnings that VT-x is not enabled) my V icon was earlier gray so it means the VT-x was disabled. As I said I had it enabled in my BIOS all the time.
Finally I realized the problem might by HYPER-V which I also installed and enabled to test sites on older Internet Explorer. I went to Windows...
Explaining Apache ZooKeeper
...se nodes include the server for the client, and obviously the master. This means that each write makes the server up-to-date with the master. It also means, however, that you cannot have concurrent writes.
The guarantee of linear writes is the reason for the fact that ZooKeeper does not perform we...