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Generate colors between red and green for a power meter?
...scale the red and green values. Assuming your max red/green/blue value is 255, and n is in range 0 .. 100
R = (255 * n) / 100
G = (255 * (100 - n)) / 100
B = 0
(Amended for integer maths, tip of the hat to Ferrucio)
Another way to do would be to use a HSV colour model, and cycle the hue from 0 ...
How to properly seed random number generator
...]byte, l)
for i := 0; i < l; i++ {
bytes[i] = byte(randInt(65, 90))
}
return string(bytes)
}
func randInt(min int, max int) int {
return min + rand.Intn(max-min)
}
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.trim() in JavaScript not working in IE
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edited Jul 26 '10 at 6:58
answered Feb 22 '10 at 0:44
Be...
“405 method not allowed” in IIS7.5 for “PUT” method
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answered Feb 20 '13 at 9:57
Davide IcardiDavide Icardi
10.3k77 gold badges4848 silver badges6565 bronze badges
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How to get root view controller?
...cation.shared.keyWindow!.rootViewController as! YourViewController
Swift 5 & 5.1 & 5.2
let viewController = UIApplication.shared.windows.first!.rootViewController as! YourViewController
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Need to handle uncaught exception and send log file
...new Intent ();
intent.setAction ("com.mydomain.SEND_LOG"); // see step 5.
intent.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK); // required when starting from Application
startActivity (intent);
System.exit(1); // kill off the crashed app
}
}
(3) Extract log (I put this an my SendLog...
How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on
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edited Sep 23 '15 at 11:46
Nakilon
31.1k1212 gold badges9494 silver badges125125 bronze badges
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Difference between JSON.stringify and JSON.parse
...n a string, eg:
var my_object = { key_1: "some text", key_2: true, key_3: 5 };
var object_as_string = JSON.stringify(my_object);
// "{"key_1":"some text","key_2":true,"key_3":5}"
typeof(object_as_string);
// "string"
JSON.parse turns a string of JSON text into a JavaScript object, eg:
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Converting strings to floats in a DataFrame
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edited May 30 '18 at 1:15
jpp
124k2323 gold badges154154 silver badges204204 bronze badges
answered Ma...
MySQL offset infinite rows
...nstruct a query that displays all the results in a table, but is offset by 5 from the start of the table. As far as I can tell, MySQL's LIMIT requires a limit as well as an offset. Is there any way to do this?
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