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搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.8.tgz
4、分别在每台机器建立mongos 、config 、 shard1 、shard2、shard3 五个目录。
因为mongos不存储数据，只需要建立...
How do you do a limit query in JPQL or HQL?
...SQL (using MsSql2008Dialect). This is good.
– Thierry_S
Nov 4 '13 at 17:00
17
@Rachel With setMax...
How can you encode a string to Base64 in JavaScript?
...ation for Unicode strings: developer.mozilla.org/En/DOM/Window.btoa#Unicode_Strings btoa and atob only work properly for ASCII based strings. As an American, you probably won't notice a difference ... but the first time you use an accented character, your code will break.
– Da...
How to sort a list of objects based on an attribute of the objects?
... work if the object has dynamically added attributes, (if you've done self.__dict__ = {'some':'dict'} after the __init__ method). I don't know why it sould be different, though.
– tutuca
Jan 7 '13 at 20:40
...
How to document class attributes in Python? [closed]
...speed exceeding that of an unladen swallow.
Attributes:
flight_speed The maximum speed that such a bird can attain.
nesting_grounds The locale where these birds congregate to reproduce.
"""
flight_speed = 691
nesting_grounds = "Throatwarbler Man Grove"
I think...
Chrome Extension how to send data from content script to popup.html
... the info.
Directory structure:
root-directory/
|_____img
|_____icon19.png
|_____icon38.png
|_____manifest.json
|_____background.js
|_____content.js
|_____popup.js
|_____popup.html
...
Python: Best way to add to sys.path relative to the current running script
...single line to each file, add a import statement at top e.g.
import import_my_lib
keep import_my_lib.py in bin and import_my_lib can correctly set the python path to whatever lib you want
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Are list-comprehensions and functional functions faster than “for loops”?
...(<the code object for `[x for x in range(10)]`>)
1 0 BUILD_LIST 0
3 LOAD_FAST 0 (.0)
>> 6 FOR_ITER 12 (to 21)
9 STORE_FAST 1 (x)
12 LOAD_FAST 1 (x)
...
Open file in a relative location in Python
...n a subdirectory beneath where the script is actually located, you can use __file__ to help you out here. __file__ is the full path to where the script you are running is located.
So you can fiddle with something like this:
import os
script_dir = os.path.dirname(__file__) #<-- absolute dir the...
How do you run your own code alongside Tkinter's event loop?
...o the function call. Return
identifier to cancel scheduling with after_cancel."""
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