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C pointers : pointing to an array of fixed size
...re illegal. However, we know in practice that you can always automatically convert from char* to char const* without warning. IMO, clang is more consistent in allowing this than gcc is, though I agree with you that the spec seems to prohibit any of these automatic conversions.
–...
Polymorphism in C++
...ndard conversion sequence will be applied to an expression if necessary to convert it to a required destination type.
These conversions allow code such as:
double a(double x) { return x + 2; }
a(3.14);
a(42);
Applying the earlier test:
To be polymorphic, [a()] must be able to operate with...
Why use static_cast(x) instead of (int)x?
... = static_cast<CMyOtherStuff*>(pSomething); // Compiler error: Can't convert
pOther = (CMyOtherStuff*)(pSomething); // No compiler error.
// Same as reinterpret_cast<>
// and i...
How to open, read, and write from serial port in C?
...al port. I have a USB device in Linux that uses the FTDI USB serial device converter driver. When I plug it in, it creates: /dev/ttyUSB1.
...
Why is creating a new process more expensive on Windows than Linux?
...'poorly ported' because it doesn't run well on a poorly designed operating system full of compatibility cruft that slows down process creation is ridiculous.
– Miles Rout
Feb 5 '17 at 21:08
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How to make gradient background in android
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//Color.parseColor() method allow us to convert
// a hexadecimal color string to an integer value (int color)
int[] colors = {Color.parseColor("#008000"),Color.parseColor("#ADFF2F")};
//create a new gradient color
GradientDrawable gd = new GradientDrawable(
Gradie...
Initialize a byte array to a certain value, other than the default null? [duplicate]
...he square brackets [] to declare an array. Also, your constants need to be convertible to byte, which numbers (ints) such as 4, 3, and 2 are not. So it has to be: new byte[] { (byte) 4, (byte) 3, (byte) 2}, or the hex syntax.
– Oliver
Dec 1 '14 at 21:44
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Can a Byte[] Array be written to a file in C#?
...
Try BinaryReader:
/// <summary>
/// Convert the Binary AnyFile to Byte[] format
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public static byte[] ConvertANYFileToBytes(HttpPostedFileBase image)
{
byte...
How can I determine whether a 2D Point is within a Polygon?
...float v2y2
) {
float d1, d2;
float a1, a2, b1, b2, c1, c2;
// Convert vector 1 to a line (line 1) of infinite length.
// We want the line in linear equation standard form: A*x + B*y + C = 0
// See: http://en.wikipedia.org/wiki/Linear_equation
a1 = v1y2 - v1y1;
b1 = v1x1 ...
What are bitwise operators?
....
Take expr1 && expr2 for example.
Returns expr1 if it can be converted
to false; otherwise, returns expr2.
Thus, when used with Boolean values,
&& returns true if both operands are
true; otherwise, returns false.
a = "Cat" && "Dog" // t && t return...