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How to compare two colors for similarity/difference

I want to design a program that can help me assess between 5 pre-defined colors which one is more similar to a variable color, and with what percentage. The thing is that I don't know how to do that manually step by step. So it is even more difficult to think of a program. ...
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IllegalArgumentException or NullPointerException for a null parameter? [closed]

I have a simple setter method for a property and null is not appropriate for this particular property. I have always been torn in this situation: should I throw an IllegalArgumentException , or a NullPointerException ? From the javadocs, both seem appropriate. Is there some kind of an understood...
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How can you dynamically create variables via a while loop? [duplicate]

I want to create variables dynamically via a while loop in Python. Does anyone have any creative means of doing this? 8 Ans...
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Checking for empty arrays: count vs empty

This question on ' How to tell if a PHP array is empty ' had me thinking of this question 12 Answers ...
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How is TeamViewer so fast?

... The most fundamental thing here probably is that you don't want to transmit static images but only changes to the images, which essentially is analogous to video stream. My best guess is some very efficient (and heavily specialized and optimized) motion co...
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Why is using 'eval' a bad practice?

... Yes, using eval is a bad practice. Just to name a few reasons: There is almost always a better way to do it Very dangerous and insecure Makes debugging difficult Slow In your case you can use setattr instead: class Song: """The class to stor...
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What is href=“#” and why is it used?

... About hyperlinks: The main use of anchor tags - <a></a> - is as hyperlinks. That basically means that they take you somewhere. Hyperlinks require the href property, because it specifies a location. Hash: A hash - # wi...
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What killed my process and why?

My application runs as a background process on Linux. It is currently started at the command line in a Terminal window. 14 ...
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Returning null as an int permitted with ternary operator but not if statement

Let's look at the simple Java code in the following snippet: 8 Answers 8 ...
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Spring Java Config: how do you create a prototype-scoped @Bean with runtime arguments?

Using Spring's Java Config, I need to acquire/instantiate a prototype-scoped bean with constructor arguments that are only obtainable at runtime. Consider the following code example (simplified for brevity): ...