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Converting RGB to grayscale/intensity

When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140. ...
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What is the method for converting radians to degrees?

...180 I guess if you wanted to make a function for this [in PHP]: function convert($type, $num) { if ($type == "rads") { $result = $num*180/pi(); } if ($type == "degs") { $result = $num*pi()/180; } return $result; } Yes, that could probably be wr...
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How can I convert string to datetime with format specification in JavaScript?

How can I convert a string to a date time object in javascript by specifying a format string? 15 Answers ...
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How to convert 1 to true or 0 to false upon model fetch

... All you need is convert string to int with + and convert the result to boolean with !!: var response = {"isChecked":"1"}; response.isChecked = !!+response.isChecked You can do this manipulation in the parse method: parse: function (respo...
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convert a JavaScript string variable to decimal/money

How can we convert a JavaScript string variable to decimal? 7 Answers 7 ...
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Ruby convert Object to Hash

...t object with @name = "book" & @price = 15.95 . What's the best way to convert that to the Hash {name: "book", price: 15.95} in Ruby, not Rails (although feel free to give the Rails answer too)? ...
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Why is isNaN(null) == false in JS?

...N. Here's the algorithmic explanation: The function isNaN(x) attempts to convert the passed parameter to a number1 (equivalent to Number(x)) and then tests if the value is NaN. If the parameter can't be converted to a number, Number(x) will return NaN2. Therefore, if the conversion of parameter x ...
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How to convert a string to lower or upper case in Ruby

How do I take a string and convert it to lower or upper case in Ruby? 11 Answers 11 ...
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How to convert an array of strings to an array of floats in numpy?

How to convert 4 Answers 4 ...
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How to convert “camelCase” to “Camel Case”?

...?![A-Z]))(?=\S)/g, ' $1').replace(/^./, s => s.toUpperCase() ); It will convert userID to User ID, and it will even convert userIDField to User ID Field – Eugene Mala Dec 1 '19 at 14:28 ...