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What is the difference between a URI, a URL and a URN?
...resource from its location. For example:
http://example.com/mypage.html
ftp://example.com/download.zip
mailto:user@example.com
file:///home/user/file.txt
tel:1-888-555-5555
http://example.com/resource?foo=bar#fragment
/other/link.html (A relative URL, only useful in the context of another URL)
...
source of historical stock data [closed]
...se it everyday to update you history. If you want to download from http or ftp with CSI, you must pay about 200€ on month. Sorry, but it's too expensive.
– davidxxx
Mar 14 '15 at 20:27
...
Which characters make a URL invalid?
...or example, can contain an optional username so it could be something like ftp://user@hostname/ where the '@' character has special meaning.
Here is an example of a URL that has invalid and unwise characters (e.g. '$', '[', ']') and should be properly encoded:
http://mw1.google.com/mw-earth-vector...
How to read a .xlsx file using the pandas Library in iPython?
...rkbook.
The string could be a URL. Valid URL schemes include http, ftp, s3,
and file. For file URLs, a host is expected. For instance, a local
file could be file://localhost/path/to/workbook.xlsx
sheetname : string, int, mixed list of strings/ints, or None, default 0
...
Which parts of Real World Haskell are now obsolete or considered bad practice?
...ding RWH. It's probably incomplete.
Chapter 2. Types and Functions vs the FTP
Since GHC 7.10.
The type of null has been changed due to the Foldable-Traversable-Proposal. Many other functions such as foldr, foldl and many other that were previously only defined for [a] in the Prelude have been rep...
Should I use SVN or Git? [closed]
...zation can occur over many media.
An SSH channel, over HTTP via WebDAV, by FTP, or by sending emails holding patches to be applied by the recipient of the message. A central repository isn't necessary, but can be used.
Branches are even cheaper than they are in Subversion.
Creating a branch is as si...
What is the difference between application server and web server?
...int is that all this is done on top of the HTTP protocol. There also exist FTP servers for example which do exactly the same thing (serving stored files) but on top of a different protocol.
Application server
Say we have a tiny application like below (snippet from Flask).
@app.route('/')
def home...
Homebrew install specific version of formula?
...hecking connectivity... done.
Tapped 125 formula
==> Downloading http://ftp.postgresql.org/pub/source/v8.4.19/postgresql-8.4.19.tar.bz2
# …
Note that this has automatically tapped the homebrew/versions tap. (Check with brew tap, remove with brew untap homebrew/versions.) The following would h...
2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...一下Hadoop的工作原理？
我们先说HDFS，所谓Hadoop的分布式文件系统，它是能真正做到高强度容错。并且根据locality原理，对连续存储做了优化。简单说就是分配大的数据块，每次连续读整数个。如果让你自己来设计分布式文件系...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...这些连接以及设备发现和广告的规则由蓝牙通用访问配置文件 (GAP) 管理，这是所有 BLE 设备都必须遵守的强制性框架。
广播者与观察者 - 在这种情况下，嵌入在各种物联网设备中的传感器将定期向监听范围内的智能手机发送广...