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Java int to String - Integer.toString(i) vs new Integer(i).toString()
Sometimes java puzzles me.
I have a huge amount of int initializations to make.
11 Answers
...
How do I best silence a warning about unused variables?
...piler sees it is used. This is portable between compilers.
E.g.
void foo(int param1, int param2)
{
(void)param2;
bar(param1);
}
Or,
#define UNUSED(expr) do { (void)(expr); } while (0)
...
void foo(int param1, int param2)
{
UNUSED(param2);
bar(param1);
}
...
What is the difference between canonical name, simple name and class name in Java Class?
...eTest {
public static void main(final String... arguments) {
printNamesForClass(
int.class,
"int.class (primitive)");
printNamesForClass(
String.class,
"String.class (ordinary class)");
printNamesForClass(
java.u...
What is the best Battleship AI?
...
Interesting... It runs fine on the tournament machine. However, a "perfect" engine would adapt to however much time it had already spent.
– John Gietzen
Nov 16 '09 at 14:18
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Variable declared in for-loop is local variable?
...s invalid according to the above.
The reason why you're not allowed to do int A = i; is because int i is only scoped for use within the for loop. Thus it is no longer accessible outside of the for loop.
As you can see both of these issues are a result of scoping; the first issue (int i = 4;) woul...
How do I define a method which takes a lambda as a parameter in Java 8?
...bda does not need to know that a Lambda is involved, instead it accepts an Interface with the appropriate method.
In other words, you define or use a functional interface (i.e. an interface with a single method) that accepts and returns exactly what you want.
For this Java 8 comes with a set of co...
How do I sort one vector based on values of another
...for each x
sort(order(y)[x]) #sorts by that order
y[sort(order(y)[x])] #converts orders back to numbers from orders
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...
What's the rationale for null terminated strings?
... pointers can do.
the core language just include minimal syntaxic sugar to convert
something between double quotes to a
bunch of chars (really a bunch of
bytes). In some cases it can be used
to initialize things completely
unrelated with text. For instance xpm
image file format is a valid C source
t...
How to initialize a vector in C++ [duplicate]
...l flags to be enabled on your compiler) you can simply do:
std::vector<int> v { 34,23 };
// or
// std::vector<int> v = { 34,23 };
Or even:
std::vector<int> v(2);
v = { 34,23 };
On compilers that don't support this feature (initializer lists) yet you can emulate this with an a...
程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...ed = AES_Encrypt(bytesToBeEncrypted, passwordBytes);
string result = Convert.ToBase64String(bytesEncrypted);
return result;
}
public static string DecryptText(string input, string password)
{
// Get the bytes of the string
byte[] bytesToBeDecrypted = Convert.FromBase64...