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What is a raw type and why shouldn't we use it?
...rom Object to the desired type.
List aList = new ArrayList();
String s = "Hello World!";
aList.add(s);
String c = (String)aList.get(0);
While this worked most of the time, errors did happen
List aNumberList = new ArrayList();
String one = "1";//Number one
aNumberList.add(one);
Integer iOne = (In...
What's the “big idea” behind compojure routes?
... library.
(use 'ring.util.response)
(defn handler [request]
(response "Hello World"))
Now we want to call different handlers depending on the request.
We could do some static routing like so :
(defn handler [request]
(or
(if (= (:uri request) "/a") (response "Alpha"))
(if (= (:uri r...
Java 256-bit AES Password-Based Encryption
...erSpec(IvParameterSpec.class).getIV();
byte[] ciphertext = cipher.doFinal("Hello, World!".getBytes("UTF-8"));
Store the ciphertext and the iv. On decryption, the SecretKey is regenerated in exactly the same way, using using the password with the same salt and iteration parameters. Initialize the c...
Simple way to encode a string according to a password?
...es) -> bytes:
return zlib.decompress(b64d(obscured))
This turns b'Hello world!' into b'eNrzSM3JyVcozy_KSVEEAB0JBF4='.
Integrity only
If all you need is a way to make sure that the data can be trusted to be unaltered after having been sent to an untrusted client and received back, then you...
Is Java really slow?
... developer writing the first few programs in the language. Execution of a "hello world" program in most languages appears instantaneous, but in Java there's an easily perceptible pause as the JVM starts up. Even a pure interpreter that runs much more slowly on tight loops and such will still often a...
Pretty-print C++ STL containers
...back(23);
i.push_back(34);
std::set<std::string> j;
j.insert("hello");
j.insert("world");
double k[] = { 1.1, 2.2, M_PI, -1.0/123.0 };
std::cout << i << "\n" << j << "\n" << k << "\n";
}
It currently only works with vector and set, but can b...
Bytecode features not available in the Java language
....println(s);
}
}
class Bar extends Foo {
public Bar() {
this(s = "Hello World!");
}
private Bar(String helper) {
super();
}
}
This way, a field could be set before the super constructor is invoked which is however not longer possible. In JBC, this behavior can still be implement...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Parent)
, m_port(8000)
, m_nickname(_T("microtong"))
, m_message(_T("hello"))
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CClientDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_IP, m_ip);
DDX_Text(pDX, IDC_PORT, m_port);
D...
C# Object Pooling Pattern implementation
...{0}", num);
}
public void Test()
{
Console.WriteLine("Hello from Foo #{0}", num);
}
}
Here's our pretend disposable Foo resource which implements IFoo and has some boilerplate code for generating unique identities. What we do is to create another special, pooled object:
...
What is the difference between bottom-up and top-down?
...
Hello!!! I want to determine if the following propositions are right. - For a Dynamic Programming algorithm, the computation of all the values with bottom-up is asymptotically faster then the use of recursion and memoizati...