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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...00001-B5A3-F393-E0A9-E50E24DCCA9E。标准16位UUID技术文档请参考：https://www.bluetooth.com/specifications/assigned-numbers/。
点此自助购买 以上演示的aia源码。BLE专业文档更多关于BLE更深入的技术原理介绍，请参考BLE技术揭秘。
最后做个推广即...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
...nted to meet these two criteria:
You want to allow developers to use non-HTTPS redirect URI because not all developers have an SSL enabled server and if they do it's not always properly configured (non-self signed, trusted SSL certificates, synchronised server clock...).
You don't want hackers to ...
How to create a self-signed certificate for a domain name for development?
... hand side
On the right hand side under Actions select Bindings
Add a new HTTPS binding and select the certificate you just created (if your certificate is a wildcard certificate you'll need to specify a hostname)
Click OK and test it out.
...
What is the difference between angular-route and angular-ui-router?
...ures are very useful for larger applications.
More Information:
Github: https://github.com/angular-ui/ui-router
Documentation:
API Reference: http://angular-ui.github.io/ui-router/site/#/api
Guide: https://github.com/angular-ui/ui-router/wiki
FAQs: https://github.com/angular-ui/ui-router/wiki/...
How to get the url parameters using AngularJS
...uteParams
If you're using angular-ui-router, you can inject $stateParams
https://github.com/angular-ui/ui-router/wiki/URL-Routing
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...
Image resizing client-side with JavaScript before upload to the server
...
Here's a gist which does this:
https://gist.github.com/dcollien/312bce1270a5f511bf4a
(an es6 version, and a .js version which can be included in a script tag)
You can use it as follows:
<input type="file" id="select">
<img id="preview">
<...
Should a “static final Logger” be declared in UPPER-CASE?
...
I like Google's take on it (Google Java Style)
Every constant is a static final field, but not all static final fields are constants. Before choosing constant case, consider whether the field really feels like a constant. For ex...
Given a URL to a text file, what is the simplest way to read the contents of the text file?
...pt from been flooded:
import urllib2
data = urllib2.urlopen("http://www.google.com").read(20000) # read only 20 000 chars
data = data.split("\n") # then split it into lines
for line in data:
print line
* Second example in Python 3:
import urllib.request # the lib that handles the url...
Remove/hide a preference from the screen
...pp:isPreferenceVisible="false" />
...
The attribute is documented at https://developer.android.com/guide/topics/ui/settings/components-and-attributes
Adding PreferenceFragmentCompat is documented at https://developer.android.com/guide/topics/ui/settings/#inflate_the_hierarchy
Example:
publi...
AngularJS-Twig conflict with double curly braces
...ider){
$interpolateProvider.startSymbol('{[{').endSymbol('}]}');
});
https://docs.angularjs.org/api/ng/provider/$interpolateProvider
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