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Produce a random number in a range using C#
...lower bound and zero. So for -1 to 1 double rDouble = (r.NextDouble()*2)-1.0;
– Tom Heard
Oct 28 '13 at 20:03
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How do I read any request header in PHP
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$_SERVER['HTTP_X_REQUESTED_WITH']
RFC3875, 4.1.18:
Meta-variables with names beginning with HTTP_ contain values read from the client request header fields, if the protocol used is HTTP. The HTTP header field name is converted to upper case, has all occurrences of -...
How to create custom easing function with Core Animation?
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// this should be a function that takes a time value between
// 0.0 and 1.0 (where 0.0 is the beginning of the animation
// and 1.0 is the end) and returns a scale factor where 0.0
// would produce the starting value and 1.0 would produce the
// ending value
typedef double (^KeyframeParametric...
Meaning of -
...t it is dealing with. In most cases (for English speakers anyway), version 1.0 is sufficient.
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Should I use multiplication or division?
... precision, the answer can still be different.
x = 100.0;
x / 3.0 == x * (1.0/3.0) // is false in the test I just performed
The speed issue is only likely to matter in C/C++ or JIT languages, and even then only if the operation is in a loop at a bottleneck.
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How to create a colored 1x1 UIImage on the iPhone dynamically?
...th color: UIColor) -> UIImage {
let rect = CGRectMake(0.0, 0.0, 1.0, 1.0)
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()
CGContextSetFillColorWithColor(context, color.CGColor)
CGContextFillRect(context, rect)
le...
How can I exclude some folders from my Eclipse project?
...gt;<!-- exclude all, folders, all children -->
<arguments>1.0-name-matches-false-false-xyz</arguments> <!-- case sensitive=false, regular expression=false, something named=xyz -->
<arguments>1.0-name-matches-true-false-EEE</arguments> <!-- case sensiti...
Auto line-wrapping in SVG text
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Text wrapping is not part of SVG1.1, the currently implemented spec. You should rather use HTML via the <foreignObject/> element.
<svg ...>
<switch>
<foreignObject x="20" y="90" width="150" height="200">
<p xmlns="http://www.w3....
How to change the background color of a UIButton while it's highlighted?
...)imageWithColor:(UIColor *)color {
CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *...
How to use hex color values
... 255.0, green: CGFloat(green) / 255.0, blue: CGFloat(blue) / 255.0, alpha: 1.0)
}
convenience init(rgb: Int) {
self.init(
red: (rgb >> 16) & 0xFF,
green: (rgb >> 8) & 0xFF,
blue: rgb & 0xFF
)
}
}
Usage:
let color = U...