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Separation of business logic and data access in django
...that are merely presentational: custom tags and template filters.
template.html
<h1>Welcome, {{ user|friendly_name }}</h1>
template_tags.py
@register.filter
def friendly_name(user):
return remote_api.get_cached_name(user.id)
Query methods
If your query is not merely presentational,...
Why does base64 encoding require padding if the input length is not divisible by 3?
...ods.
Examples
Here is the example form RFC 4648 (http://tools.ietf.org/html/rfc4648#section-8)
Each character inside the "BASE64" function uses one byte (base256). We then translate that to base64.
BASE64("") = "" (No bytes used. 0%3=0.)
BASE64("f") = "Zg==" (One by...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...找的参考资料
http://www.cnblogs.com/gunl/archive/2010/09/14/1826234.html
知识准备
一、原理说明
1、路由表（table）从0到255进行编号，每个编号可以对应一个别名，编号和别名的对应关系在linux下放在/etc/iproute2/rt_tables这个文件里，一般...
Understanding REST: Verbs, error codes, and authentication
...L schemas designed suited to your application versus using something like XHTML as your representation, perhaps through microformats and other mechanisms.
Both approaches have their place, I think, the XHTML working very well in scenarios that overlap both the human driven and machine driven web, w...
Bootstrap NavBar with left, center or right aligned items
...enu, not the other way around.
This can be accomplished strictly in the HTML by using Bootstrap's "navbar-right" and "navbar-left" for the logos and then "nav-justified" instead of "navbar-nav" for your UL. No addtional CSS needed (unless you want to put the navbar-collapse toggle in the center i...
What do linkers do?
...xed documented at: http://www.sco.com/developers/gabi/2003-12-17/ch4.reloc.html
Each entry tells the linker about one address which needs to be relocated, here we have only one for the string.
Simplifying a bit, for this particular line we have the following information:
Offset = C: what is the ...
How do you rotate a two dimensional array?
... I believe this code originates from Peter Norvig: norvig.com/python-iaq.html
– Josip
Jul 7 '09 at 14:43
Android Min SDK Version vs. Target SDK Version
... URL:
http://developer.android.com/guide/topics/manifest/uses-sdk-element.html
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
...hich can be used to implement 'did you mean ?' sphinxsearch.com/docs/devel.html#sphinxql-call-suggest
– Vinod K
Aug 2 '17 at 7:42
...
What are deferred objects?
...is when we make calls to a server to fetch some data from a database or an HTML page. If those calls were not asynchronous, the user interface will be stuck waiting for the server to respond. This asynchronous nature leads to a problem when you want to execute things in an order, for example, you wa...