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How to compare two colors for similarity/difference
...ues are in the sRGB colorspace, find the sRGB to Lab* conversion formulas, convert your sRGB colors to Lab*, and compute deltaE between your two Lab* values. It's not computationally expensive, it's just some nonlinear formulas and some multiplies and adds.
...
PHP json_encode encoding numbers as strings
...er":"test","ananother":456}
So, in this case, the integers have not been converted to string.
Still, this might be dependant of the version of PHP we are using : there have been a couple of json_encode related bugs corrected, depending on the version of PHP...
This test has been made with PHP 5...
How to convert integer timestamp to Python datetime
... 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix...
Where is the WPF Numeric UpDown control?
...s e)
{
int number;
if (NUDTextBox.Text != "") number = Convert.ToInt32(NUDTextBox.Text);
else number = 0;
if (number < maxvalue)
NUDTextBox.Text = Convert.ToString(number + 1);
}
private void NUDButtonDown_Click(object sender, RoutedEventA...
Integer.toString(int i) vs String.valueOf(int i)
... why the method String.valueOf(int i) exists ? I am using this method to convert int into String and just discovered the Integer.toString(int i) method.
...
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue
... value range for brightness is wrong. It should be between -255 and 255 or converted afterwards.
– woodii
Jan 2 at 16:03
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When to use reinterpret_cast?
...you will know.
Full answer:
Let's consider basic number types.
When you convert for example int(12) to unsigned float (12.0f) your processor needs to invoke some calculations as both numbers has different bit representation. This is what static_cast stands for.
On the other hand, when you call r...
Converting bool to text in C++
Maybe this is a dumb question, but is there any way to convert a boolean value to a string such that 1 turns to "true" and 0 turns to "false"? I could just use an if statement, but it would be nice to know if there is a way to do that with the language or standard libraries. Plus, I'm a pedant. :...
Random shuffling of an array
... feel free to use it. Make sure you import the required class and you have converted the array to a list with Arrays.asList. You have to convert the resulting list to an array, too
– KitKat
Jun 9 '18 at 16:50
...
What exactly is nullptr?
...a null pointer constant, and that an integral null pointer constant can be converted to std::nullptr_t. The opposite direction is not allowed. This allows overloading a function for both pointers and integers, and passing nullptr to select the pointer version. Passing NULL or 0 would confusingly sel...