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How to get hex color value rather than RGB value?
...,"2","3","4","5","6","7","8","9","a","b","c","d","e","f");
//Function to convert rgb color to hex format
function rgb2hex(rgb) {
rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
}
function hex(x) {
return isNaN(x) ? "00" : hexDigits[(x...
How do I query between two dates using MySQL?
...d only dates are specified for comparison, then these dates are internally converted to datetime values. This means that the following query
SELECT * FROM `objects` WHERE (date_time_field BETWEEN '2010-01-30' AND '2010-09-29')
will be converted to
SELECT * FROM `objects` WHERE (date_time_field ...
Static implicit operator
...gh these look like two totally unrelated types, there is actually a way to convert from one to the other; just let me handle the logic for how to do it."
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How can I pass parameters to a partial view in mvc 4
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Here is an extension method that will convert an object to a ViewDataDictionary.
public static ViewDataDictionary ToViewDataDictionary(this object values)
{
var dictionary = new ViewDataDictionary();
foreach (PropertyDescriptor property in TypeDescriptor...
How to find list intersection?
...
If you convert the larger of the two lists into a set, you can get the intersection of that set with any iterable using intersection():
a = [1,2,3,4,5]
b = [1,3,5,6]
set(a).intersection(b)
...
Javascript seconds to minutes and seconds
...turns m:ss
return( s - // take value s and subtract (will try to convert String to Number)
( s %= 60 ) // the new value of s, now holding the remainder of s divided by 60
// (will also try to convert String to Number)
) / 60 + ( // and divide the...
Get an OutputStream into a String
...
baos.toString(StandardCharsets.UTF_8);
Converts the buffer's contents into a string by decoding the bytes using the named charset.
Java 14 - https://docs.oracle.com/
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How does a PreparedStatement avoid or prevent SQL injection?
...se:
In this phase, keywords used in query like select, from, where etc are converted into format
understandable by machine.
This is the phase where query is interpreted and corresponding action to be taken is decided.
It also has many other tasks to do, but let's not go in detail.
Query Optimizatio...
iPhone/iOS JSON parsing tutorial [closed]
...nd uses that response to populate the rows of a UITableView (assuming it converts the JSON into an NSArray first).
6 An...
Understanding ibeacon distancing
...ually the difference in dB. So:
ratio_dB = txCalibratedPower - RSSI
To convert that into a linear ratio, we use the standard formula for dB:
ratio_linear = 10 ^ (ratio_dB / 10)
If we assume conservation of energy, then the signal strength must fall off as 1/r^2. So:
power = power_at_1_meter...