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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...ice 接口才能使此方法正常工作。
参数:
param (component) —
需要特定服务的组件块。
ScanForService – 通过服务UUID扫描 广播特定BLE服务 的设备。
参数:
serviceUuid (text) —
目标BLE设备的广...
How would you implement an LRU cache in Java?
...* <code>LinkedHashMap</code>.
* </p>
*
* @param eldest
* the <code>Entry</code> in question; this implementation doesn't care what it is, since the
* implementation is only dependent on the size of the cache
* @return ...
Is there a use-case for singletons with database access in PHP?
...is being used for, unless you are content with having classes with 42 ctor parameters (or 42 setFoo() and setBar() calls required to make it work). Yes, some apps, unfortunately, do have to be this coupled and do depend on a lot of external things. PHP is a glue language, and sometimes there are a l...
Separate Back Stack for each tab in Android using Fragments
...ent, which is added in the fragment container
* view.
*
* @param newFragment
*/
protected void navigateTo(Fragment newFragment) {
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.replace(R...
Why should I use a pointer rather than the object itself?
...
@MDMoore313 You can write Object myObject(param1, etc...)
– user000001
Mar 9 '14 at 14:41
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MVC (Laravel) where to add logic
...ny action within my app:
Controller get user's requested action and sent parameters and delegates everything to a service class.
Service class do all the logic related to the operation: input validation, event logging, database operations, etc...
Model holds information of fields, data transformat...
RESTful Authentication
...ers (e.g. OAuth 2.0 + JWT);
Query Authentication with additional signature parameters.
You'll have to adapt, or even better mix those techniques, to match your software architecture at best.
Each authentication scheme has its own PROs and CONs, depending on the purpose of your security policy and...
Best architectural approaches for building iOS networking applications (REST clients)
...is passed implicitly to all controllers, you can make this explicit with a parametrised over APIClient service classes. This can make sense if you want to use different customisations of the APIClient for particular service classes, but if you ,for some reasons, don't want extra copies or you are su...
Fastest way to iterate over all the chars in a String
...y of this list repeatedly
* while we repeat this test.
*
* @param data
* @return
*/
List<Jobber> makeTests(String data) throws Exception {
// make a list of tests
final List<Jobber> tests = new ArrayList<Jobber>();
tests.add(new...
C++ performance vs. Java/C#
...imization. If you find that a method is very often called with a specific parameter, you could pre-compile that routine with that parameter as a constant which could (in the case of a boolean that controls flow) factor out gigantic chunks of work. C++ cannot come close to doing that kind of optimi...