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Orchestration vs. Choreography
...are the differences between service orchestration and service choreography from an intra-organization point of view.
10 Ans...
二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
.../qr_code.pdf
基础知识
首先，我们先说一下二维码一共有40个尺寸。官方叫版本Version。Version 1是21 x 21的矩阵，Version 2是 25 x 25的矩阵，Version 3是29的尺寸，每增加一个version，就会增加4的尺寸，公式是：(V-1)*4 + 21（V是版本号） 最...
How can I debug a .BAT script?
...r this. If you called a program, the Error level is in %ERRORLEVEL%, while from batch files the error level is returned in the ErrorLevel variable and doesn't need %'s around it.
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Date query with ISODate in mongodb doesn't seem to work
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When comparing a partial (no time) date, I had to switch from new Date('2016-03-09') to ISODate('2016-03-09'). The former would return dates in the past for a $gte query.
– Matt Molnar
Mar 9 '16 at 19:31
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Detect whether there is an Internet connection available on Android [duplicate]
...al, captive portals, content filters and the like can all prevent your app from reaching a server. For instance you can't tell for sure if your app can reach Twitter until you receive a valid response from the Twitter service.
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Use PHP composer to clone git repo
I'm trying to use composer to automatically clone a git repository from github that isn't in packagist but it's not working and I can't figure out what am I doing wrong.
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Should I use `import os.path` or `import os`?
... Wow, os.py does indeed inject into sys.modules['os.path']. So this is why from os.path import something actually works. I was curious about when this was introduced and checked the source. Fun fact: This is from 1999, first included in Python 1.5.2. Original commit is here.
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Changing Vim indentation behavior by file type
...ation).
This is described here: http://vimdoc.sourceforge.net/htmldoc/usr_05.html#05.4, scroll down to the section on filetype plugins.
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Create a folder inside documents folder in iOS apps
...UserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/MyFolder"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
[[NSFileManager defaultManager] createDi...
【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...
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资源地址：https://drive.google.com/drive/f ... 0BGKOaa?usp=sharing（如打不开可以直接在附件中下载）
数据在行动1：使用柱状图和饼图收集数据跟踪我的情绪这个渐进式的指南告诉你如何创建一个App来跟踪你一周或一...