大约有 40,000 项符合查询结果（耗时：0.0600秒） [XML]
Set opacity of background image without affecting child elements
...gradient(rgba(255,255,255,.5), rgba(255,255,255,.5)), url("https://i.imgur.com/xnh5x47.jpg");
}
span {
background: black;
color: white;
}
<div><span>Hello world.</span></div>
share
...
Does Git publicly expose my e-mail address?
...GPG key). Your email address does get embedded as part of your identity in commit logs, etc., along with the name you specify. For example, the "author" field in a commit log would show up as:
Author: Joe White <joewhite@mysite.com>
So the information is available to anyone with a copy of t...
Addressing localhost from a VirtualBox virtual machine [closed]
...
Googling turned this up: http://data.agaric.com/localhost-from-virtualbox-xp-install-ubuntu
It suggests using IP: http://10.0.2.2, and it worked for me.
So, I edited the hosts file, C:\windows\system32\drivers\etc\hosts, and added this entry:
10.0.2.2 outer
If ...
Showing the same file in both columns of a Sublime Text window
...d in other answers, on Linux and Windows, you can use AltShift2 (Option ⌥Command ⌘2 on OS X), which corresponds to View → Layout → Columns: 2 in the menu. If you have the excellent Origami plugin installed, you can use View → Origami → Pane → Create → Right, or the CtrlK, Ctrl→ cho...
C# code to validate email address
...e are all perfectly valid forms:
cog@wheel
"cogwheel the orange"@example.com
123@$.xyz
For most use cases, a false "invalid" is much worse for your users and future proofing than a false "valid". Here's an article that used to be the accepted answer to this question (that answer has since been d...
Read a file one line at a time in node.js?
...
I consider github.com/jahewson/node-byline to be the best implementation of line-by-line reading, but opinions may vary.
– Nakedible
Oct 15 '15 at 10:42
...
What is setup.py?
...EVER USE python setup.py install! It breaks your versioning! stackoverflow.com/questions/4324558/…
– devinbost
May 4 '17 at 18:02
2
...
Convert an image to grayscale in HTML/CSS
...-filter: grayscale(0);
filter: none;
}
<img src="http://lorempixel.com/400/200/">
What about Internet Explorer 10?
You can use a polyfill like gray.
share
|
improve this answer
...
How can I remove all text after a character in bash?
...
|
show 1 more comment
272
...
Max parallel http connections in a browser?
I am creating some suspended connections to an HTTP server (comet, reverse ajax, etc). It works ok, but I see the browser only allows two suspended connections to a given domain simultaneously. So if a user is looking at my website in Tab1 of their browser, then also tries loading it in Tab2, they'v...