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What's the difference between => , ()=>, and Unit=>
...name inside the function. For example, take this function:
def f(x: => Int) = x * x
If I call it like this
var y = 0
f { y += 1; y }
Then the code will execute like this
{ y += 1; y } * { y += 1; y }
Though that raises the point of what happens if there's a identifier name clash. In trad...
What is the “-->” operator in C++?
... \
\
\
> 0)
printf("%d ", x);
Not so mathematical, but... every picture paints a thousand words...
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Managing constructors with many parameters in Java
...he classes can have up to 30 parameters, 28 of which are just being passed into the super constructor.
8 Answers
...
Start service in Android
...ly you don't have the service in your manifest, or it does not have an <intent-filter> that matches your action. Examining LogCat (via adb logcat, DDMS, or the DDMS perspective in Eclipse) should turn up some warnings that may help.
More likely, you should start the service via:
startServic...
how do I initialize a float to its max/min value?
...n be represented; it gives the smallest normal single-precision floating point number. There are also subnormal numbers between zero and this number. In particular, std::numeric_limits<float>::min() gives 1.17549e-38 but the smallest representable subnormal float is nextafterf(0.0f, 1.0f) ==...
How to print out the contents of a vector?
I want to print out the contents of a vector in C++, here is what I have:
19 Answers
1...
What's the purpose of the LEA instruction?
...
As others have pointed out, LEA (load effective address) is often used as a "trick" to do certain computations, but that's not its primary purpose. The x86 instruction set was designed to support high-level languages like Pascal and C, where ...
How to restart Activity in Android
...
I did my theme switcher like this:
Intent intent = getIntent();
finish();
startActivity(intent);
Basically, I'm calling finish() first, and I'm using the exact same intent this activity was started with. That seems to do the trick?
UPDATE: As pointed out by...
ViewBag, ViewData and TempData
...Test1");
}
public ActionResult Test1()
{
string Str = Convert.ToString(TempData["T"]);
TempData.Keep(); // Keep TempData
return RedirectToAction("Test2");
}
public ActionResult Test2()
{
string Str = Convert.ToString(TempData["T"]); //OutPut ...
How to get last key in an array?
... to use a combination of end and key (quoting) :
end() advances array 's internal pointer to the last element, and returns its value.
key() returns the index element of the current array position.
So, a portion of code such as this one should do the trick :
$array = array(
'first' => 1...