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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...logy - Bluetooth Technology Website”, 2016.
[Online]. Available:https://www.bluetooth.com/what-is-bluetooth-technology/bluetooth.
[7] ”Introduction to Bluetooth Low Energy - Adafruit Learning System”, 2016. [Online].
Available: https://learn.adafruit.com/introduction-to-bluetooth-low-ene...
How many socket connections can a web server handle?
...0
Here is an up to date comparison of the fastest HTTP libraries - https://www.techempower.com/benchmarks/#section=data-r16&hw=ph&test=plaintext
Test date: 2018-06-06
Hardware used: Dell R440 Xeon Gold + 10 GbE
The leader has ~7M plaintext reponses per second (responses not connections)
The...
What is the exact meaning of Git Bash?
...n bash utilities, and Git on a Windows operating system.
source : https://www.atlassian.com/git/tutorials/git-bash
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What methods of ‘clearfix’ can I use?
...itioned content will not show outside the bounds of the container.
http://www.quirksmode.org/css/clearing.html
- explains how to resolve common issues related to this technique, namely, setting width: 100% on the container.
.container {
overflow: hidden;
display: inline-block;
display: block...
RESTful API methods; HEAD & OPTIONS
...
As per: http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
9.2 OPTIONS
The OPTIONS method represents a request for information about the communication options available on the request/response chain identified by the Request-URI. This m...
kernel stack and user space stack
...aling with function calls, local variables similar to user space.
http://www.kernel.org/doc/Documentation/x86/kernel-stacks
If a local variable is declared in an ISR, where it will be stored?
It will be stored in ISR stack(IRQSTACKSIZE). The ISR runs on a separate interrupt stack only if the ha...
Why does C++ require a user-provided default constructor to default-construct a const object?
...'t defined user-defined constructor. Compile it. It will compile:
http://www.ideone.com/h7TsA
And comment the virtual function, then it gives error, as expected:
http://www.ideone.com/SWk7B
Well, I think, you misunderstood the passage. It first says this (§8.5/9):
If no initializer is...
How to specify maven's distributionManagement organisation wide?
...t;
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>your.company&...
Difference between Observer, Pub/Sub, and Data Binding
...atterns: Designing, Building, and Deploying Messaging Solutions" -
http://www.addison-wesley.de/9780321200686.html
This book contains a lot of ideas about how to send messages between processes or classes that can be used even in intra-process communication tasks (it helped me to program in a more...
How to add a custom Ribbon tab using VBA?
.....)
By the way the page that explains it on Ron's site is now at
http://www.rondebruin.nl/win/s2/win002.htm
And here is his example on how you enable /disable buttons on the Ribbon
http://www.rondebruin.nl/win/s2/win013.htm
For other xml examples of ribbons please also see
http://msdn.microsoft...