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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
注意linux生产环境不能安装32位的mongodb，因为32位受限于操作系统最大2G的文件限制。
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.8.tgz
4、分别在...
Importing from a relative path in Python
...port things):
import sys, os
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'Common'))
import Common
os.path.dirname(__file__) just gives you the directory that your current python file is in, and then we navigate to 'Common/' the directory and import 'Common' the module.
...
Getting list of parameter names inside python function [duplicate]
....
>>> func = lambda x, y: (x, y)
>>>
>>> func.__code__.co_argcount
2
>>> func.__code__.co_varnames
('x', 'y')
>>>
>>> def func2(x,y=3):
... print(func2.__code__.co_varnames)
... pass # Other things
...
>>> func2(3,3)
('x', 'y')
>...
乐高 EV3 实验04 - 颜色传感器巡线 · App Inventor 2 中文网
...
命名
关键属性
按钮
按钮_识别颜色
文本「读一次颜色」
标签
标签_颜色
字号 28，文本「–」
标签
标签_反光
文本「反光值：–」
按钮
...
Are types like uint32, int32, uint64, int64 defined in any stdlib header?
...
The C99 stdint.h defines these:
int8_t
int16_t
int32_t
uint8_t
uint16_t
uint32_t
And, if the architecture supports them:
int64_t
uint64_t
There are various other integer typedefs in stdint.h as well.
If you're stuck without a C99 environment then you sho...
What is the purpose of Flask's context stacks?
...ing" example:
from werkzeug.wsgi import DispatcherMiddleware
from frontend_app import application as frontend
from backend_app import application as backend
application = DispatcherMiddleware(frontend, {
'/backend': backend
})
Notice that there are two completely different Flask applicat...
micro:bit 实验08 - 摇一摇与倾斜检测 · App Inventor 2 中文网
...高度 300、背景浅灰
图像精灵
图像精灵_小球
30×30
标签
标签_三轴
文本「X – Y – Z –」
标签
标签_姿态
字号 24，文本「平放」
Microbit_Accelerometer
Mi...
App Inventor 2 图标字体：2000 多个 Material 图标，文字与图标混排 · App Inventor 2 中文网
...rial 图标字体」，文字里写图标的英文名（如 home、shopping_cart），就显示成对应的图标。内置 2000 多个 Google Material 图标。
图标本质是文字，所以：
颜色用组件的「文本颜色」，大小用「字体大小」，放大不模糊；
能和中...
Dynamically load JS inside JS [duplicate]
...
and use it like:
if (typeof someObject == 'undefined') $.loadScript('url_to_someScript.js', function(){
//Stuff to do after someScript has loaded
});
share
|
improve this answer
|
...
What is a Python equivalent of PHP's var_dump()? [duplicate]
When debugging in PHP, I frequently find it useful to simply stick a var_dump() in my code to show me what a variable is, what its value is, and the same for anything that it contains.
...