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How to check if hex color is “too black”?

...e darkness of a color chosen by a color picker to see if it's "too black", and if so, set it to white. I thought I could use the first characters of the hex value to pull this off. It's working, but it's switching some legitimately "light" colors too. ...
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jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)

... Update There is a new and very simple solution for this: It allows you to use any kind of input filter on a text <input>, including various numeric filters. This will correctly handle Copy+Paste, Drag+Drop, keyboard shortcuts, contex...
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Why does this C++ snippet compile (non-void function does not return a value) [duplicate]

... This is undefined behavior from the C++11 draft standard section 6.6.3 The return statement paragraph 2 which says: [...] Flowing off the end of a function is equivalent to a return with no value; this results in undefined behavior in a value-returning function. [...] ...
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JPA and Hibernate - Criteria vs. JPQL or HQL

What are the pros and cons of using Criteria or HQL ? The Criteria API is a nice object-oriented way to express queries in Hibernate, but sometimes Criteria Queries are more difficult to understand/build than HQL. ...
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Java: when to use static methods

...ering when to use static methods? Say if I have a class with a few getters and setters, a method or two, and I want those methods only to be invokable on an instance object of the class. Does this mean I should use a static method? ...
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HTTP Basic Authentication credentials passed in URL and encryption

I have a question about HTTPS and HTTP Authentication credentials. 3 Answers 3 ...
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What's the difference between dependencies, devDependencies and peerDependencies in npm package.json

This documentation answers my question very poorly. I didn't understand those explanations. Can someone say in simpler words? Maybe with examples if it's hard to choose simple words? ...
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Is it possible for a computer to “learn” a regular expression by user-provided examples?

...ton, it is possible to learn some regular expressions by a program. Kearns and Valiant show some cases where it is not possible to learn a finite automaton. A related problem is learning hidden Markov Models, which are probabilistic automata that can describe a character sequence. Note that most mod...
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When should I use double or single quotes in JavaScript?

...r use of single vs. double in different libraries is programmer preference and/or API consistency. Other than being consistent, use whichever best suits the string. Using the other type of quote as a literal: alert('Say "Hello"'); alert("Say 'Hello'"); This can get complicated: alert("It's \"game\"...
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What are the recommendations for html tag?

...re deciding whether to use the <base> tag or not, you need to understand how it works, what it can be used for and what the implications are and finally outweigh the advantages/disadvantages. The <base> tag mainly eases creating relative links in templating languages as you don't need...