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ImageView 扩展：图片查看器扩展，支持缩放、双击缩放和动画缩放 · App In...
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下载链接
扩展文件：
com.dreamers.ImageViewer.aix
示例文件：
ImageView.aia
效果图：
功能概述
扩展特性
捏合缩放：支持双指捏合手势进行图片缩放
双击缩放：双击图片可进...
append multiple values for one key in a dictionary [duplicate]
...values into a list of tuples. To do this, you can use list slicing and the zip function.
data_in = [2010,2,2009,4,1989,8,2009,7]
data_pairs = zip(data_in[::2],data_in[1::2])
Zip takes an arbitrary number of lists, in this case the even and odd entries of data_in, and puts them together into a tup...
How to copy a collection from one database to another in MongoDB
...ollection via:
mongodump -d some_database -c some_collection
[Optionally, zip the dump (zip some_database.zip some_database/* -r) and scp it elsewhere]
Then restore it:
mongorestore -d some_other_db -c some_or_other_collection dump/some_collection.bson
Existing data in some_or_other_collection wil...
Fastest check if row exists in PostgreSQL
...mit it to 1 row. Should perform better. Have a look at edited answer from @aix for that.
– Fabian Barney
Sep 19 '11 at 13:44
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...ou gave. You might want to install rubygems from a gem file instead of the zip files he mentions. I haven't found a command to install from an unpacked gem or zip file. Gem here - rubygems.org/pages/download. The command is - gem install --local C:\Downloads\rubygems-update-2.4.5.gem
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滚动布局管理器拓展 - ScrollArrangementHandler · App Inventor 2 中文网
... 最后更新：2017.12.25 (v3)
拓展文件：ScrollArrangementHandlers.aix
本文档基于ColinTree官方文档整理翻译，原文 侵删。点此参考讨论。
您的改进建议 联系方式： 不需要回复的可留空~ 意...
CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...进行下载，然后Squid 连接所申请网站并请求该主页，接着把该主页传给用户同时保留一个备份，当别的用户申请同样的页面时，Squid 把保存的备份立即传给用户，使用户觉得速度相当快。Squid 可以代理HTTP、FTP、GOPHER、SSL和WAIS等...
Set Django IntegerField by choices=… name
...rgs):
if not hasattr(choices[0],'__iter__'):
choices = zip(range(len(choices)), choices)
self.val2choice = dict(choices)
self.choice2val = dict((v,k) for k,v in choices)
kwargs['choices'] = choices
super(models.IntegerField, self).__init__(**kwar...
Check if two unordered lists are equal [duplicate]
...e number of matching elements (it considers the order).
sum([1 for i,j in zip(a,b) if i==j])
Therefore,
len(a)==len(b) and len(a)==sum([1 for i,j in zip(a,b) if i==j])
will be True if both lists are the same, contain the same elements and in the same order. False otherwise.
So, you can defin...
Getting number of elements in an iterator in Python
...ber of items.
"""
counter = itertools.count()
deque(itertools.izip(iterable, counter), maxlen=0) # (consume at C speed)
return next(counter)
(For Python 3.x replace itertools.izip with zip).
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