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What is uintptr_t data type
...s the pointer. This is useful for returning a reference to an object from APIs where you want to keep the object private to the library and prevent applications from having access to it. The application is then forced to use the API to perform any operations on the object
– J...
Difference between Covariance & Contra-variance
...m these objects.
It works because if you're only taking values out of the API, and it's going to return something specific (like string), you can treat that returned value as a more general type (like object).
Contravariance
Canonical examples: IComparer<in T>, Action<in T>
You can c...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 百度网盘的下载地址 ： http://pan.baidu.com/s/1mg61em0
ZMQ API 的 百度网盘 下载地址 ： http://pan.baidu.com/s/1jGDqXfS
注：在本文写作时，ZMQ版本已经升级到4.1.0，不过影响没多大
2）解压源文件
tar zxf zeromq-4.0.3.tar.gz
3）进入zmq目...
Are there any SHA-256 javascript implementations that are generally considered trustworthy?
...
On https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest I found this snippet that uses internal js module:
async function sha256(message) {
// encode as UTF-8
const msgBuffer = new TextEncoder('utf-8').encode(message);
// h...
Java OCR implementation [closed]
...
Java API or Java implementations..?
– Ewoks
Oct 31 '12 at 11:43
...
Sending a notification from a service in Android
...);
notificationManager.notify(0, n);
Best way
Code above needs minimum API level 11 (Android 3.0).
If your minimum API level is lower than 11, you should you use support library's NotificationCompat class like this.
So if your minimum target API level is 4+ (Android 1.6+) use this:
impo...
Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...原理，接下来演示如何通过Excel RTD来实现从Google Fiancial API中获取实时行情并刷新数据，Google Financal API，提供了世界各大交易所的实时行情数据，其支持的市场及时效性在其官网上有说明，其使用方法可以参考这篇文章，这里不...
How can I create tests in Android Studio?
...hem to test the parts of your code that just need Java and not the Android APIs. (Sometimes you can make a fake API object to test more things locally. This is called a mocking. A mock Context is an example.)
Instrumented tests. These tests are run on a real device or in the emulator. That makes the...
How to clone a case class instance and change just one field in Scala?
...d? I can't find a reference to copy in the "obvious" spots, scala-lang.org/api/current/index.html for instance.
– François Beausoleil
Aug 30 '11 at 20:38
6
...
How to move child element from one parent to another using jQuery [duplicate]
... simple:
$('#parentNode').append($('#childNode'));
According to http://api.jquery.com/append/
You can also select an element on the page and insert it into another:
$('.container').append($('h2'));
If an element selected this way is inserted into a single location
elsewhere in t...