大约有 40,000 项符合查询结果（耗时：0.1001秒） [XML]
Determine distance from the top of a div to top of window with javascript
...elementOffset - scrollTop);
The distance variable now holds the distance from the top of the #my-element element and the top-fold.
Here is a demo: http://jsfiddle.net/Rxs2m/
Note that negative values mean that the element is above the top-fold.
...
Android buildscript repositories: jcenter VS mavencentral
...ses many additional repositories and artifacts.
In different scenarios and from different countries Bintray is faster than Maven Central (e.g. from Israel). In others it is very close. Since Maven Central and Bintray use different CDNs which adaptively favor regions, this might change to both ways.
...
What Git branching models work for you?
... remote repo you need
you can publish (push) to any (bare) repo you want
From that, you can respect a few rules to make your questions easier:
only rebase a branch if it hasn't been pushed (not pushed since the last rebase)
only push to a bare repo (mandatory since Git1.7)
follow Linus's advices...
When should I use mmap for file access?
...great if you have multiple processes accessing data in a read only fashion from the same file, which is common in the kind of server systems I write. mmap allows all those processes to share the same physical memory pages, saving a lot of memory.
mmap also allows the operating system to optimize p...
Read a file line by line assigning the value to a variable
...an argument line by line:
while IFS= read -r line; do
echo "Text read from file: $line"
done < my_filename.txt
This is the standard form for reading lines from a file in a loop. Explanation:
IFS= (or IFS='') prevents leading/trailing whitespace from being trimmed.
-r prevents backslash e...
How do I remove a submodule?
... Currently using "git rm" on a submodule removes the submodule's work tree from that of the superproject and the gitlink from the index.
But the submodule's section in .gitmodules is left untouched, which is a leftover of the now removed submodule and might irritate users (as opposed to the settin...
Create ArrayList from array
...ionException. docs.oracle.com/javase/7/docs/api/java/util/… Admittedly, from an object-oriented perspective it is not very nice that many times you have to know the concrete implementation in order to use a collection - this was a pragmatic design choice in order to keep the framework simple.
...
Sending email with attachments from C#, attachments arrive as Part 1.2 in Thunderbird
...ource: http://www.coding-issues.com/2012/11/sending-email-with-attachments-from-c.html
using System.Net;
using System.Net.Mail;
public void email_send()
{
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("your m...
Django get the static files URL in view
...ves the implementation to the Django framework.
# Original answer said:
# from django.templatetags.static import static
# Improved answer (thanks @Kenial, see below)
from django.contrib.staticfiles.templatetags.staticfiles import static
url = static('x.jpg')
# url now contains '/static/x.jpg', ass...
Cosmic Rays: what is the probability they will affect a program?
...
From Wikipedia:
Studies by IBM in the 1990s suggest that computers typically experience about one cosmic-ray-induced error per 256 megabytes of RAM per month.[15]
This means a probability of 3.7 × 10-9 per byte per mon...