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App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
...果如下：
App设计及代码
服务器地址：bemfa.com
端口：9501
客户端ID：（MQTT云控制台获取）
订阅主题：APPMQTT
新建项目，导入MQTT拓展，可在“界面设计”的拓展属性中进行服务器通信基本设置：
也可以在“程序设计...
Send inline image in email
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Try this
string htmlBody = "<html><body><h1>Picture</h1><br><img src=\"cid:filename\"></body></html>";
AlternateView avHtml = AlternateView.CreateAlternateViewFromString
(htmlBody, ...
What resources are shared between threads?
...gment from the DATA segment. Sometimes there is RODATA (Data like constant strings that can be in pages marked Read Only). Some systems even break DATA into SMALL DATA (accessible from a base + 16-bit offset) and (FAR) DATA (32-bit offset required to access). It's also possible that there is an extr...
Git SSH error: “Connect to host: Bad file number”
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At the "Paste the following code in it:", I don't understand. How am I suppose to resolve bad file number? Should I create it and save as notepad file?
– David Dimalanta
Jul 9 '13 at 1:12
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Find all storage devices attached to a Linux machine [closed]
...2.6.17 and up):
#! /bin/bash
hal-find-by-property --key volume.fsusage --string filesystem |
while read udi ; do
# ignore optical discs
if [[ "$(hal-get-property --udi $udi --key volume.is_disc)" == "false" ]]; then
dev=$(hal-get-property --udi $udi --key block.device)
f...
What's the best method in ASP.NET to obtain the current domain?
...Aagaard, but you could always make one locally. I do that for most "magic" strings and numbers. For that matter, you would then use string.Empty instead of "" in Carlos' answer ;)
– vbullinger
Aug 10 '12 at 21:34
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When NOT to use Cassandra?
... time at 2 different ATMs, you will get 2 times $100, and a letter with an extra fee in your mail box. The bank earns money (the extra fee for being below the limit) by using inconsistent data. It's to hard to connect all ATMs in the world with each other through one large relational database. Can y...
Convert line-endings for whole directory tree (Git)
...r - search, filter and replace text data
sfk addhead - insert string at start of text lines
sfk addtail - append string at end of text lines
sfk patch - change text files through a script
sfk snapto - join many text files into one file
sfk joinlines ...
Repairing Postgresql after upgrading to OSX 10.7 Lion
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Sorry, I forgot that I ran into that too. Added extra step to answer.
– Ben
Jul 28 '12 at 12:06
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
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EDIT (2019): The below answer predates GDPR and likely requires revision.
Google Analytics has a new set of APIs to assist with compliance with a cookie opt-out. Here's the documentation, and here's their help docs.
There has been some ambiguity as to whether the EU...