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Best practices for overriding isEqual: and hash

...ly attributed to Dan Bernstein or Chris Torek. That older algorithm originally floated around on Usenet, and certain attribution is difficult. For example, there is some interesting commentary in this Apache code (search for their names) that references the original source. Bottom line is, this i...
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Eclipse interface icons very small on high resolution screen in Windows 8.1

...rious icons and buttons in the Eclipse (Kepler) interface are very, very small on a laptop with a 3200x1800px screen. The red error decoration that appears to indicate errors on files is difficult to see unless my nose a few cm from the screen. ...
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Is there a MySQL command to convert a string to lowercase?

...of keywords that are presently mixed-case. However, I want to convert them all to lowercase. Is there an easy command to do this, either using MySQL or MySQL and PHP? ...
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Re-enabling window.alert in Chrome

... Note that you must close all the tabs of the same domain where you opted out of that alert option. – Miguel May 4 '17 at 10:36 1 ...
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How do I create a custom Error in JavaScript?

... I'm still a bit lost in all those prototype things. Why in your example you assign name to this.name and not to NotImplementedError.prototype.name? Can you answer please, it's crucial for my understanding :) – jayarjo ...
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How to set selected value of jquery select2?

... To dynamically set the "selected" value of a Select2 component: $('#inputID').select2('data', {id: 100, a_key: 'Lorem Ipsum'}); Where the second parameter is an object with expected values. UPDATE: This does work, just wanted to n...
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Transitioning from Windows Forms to WPF

...pply them with the data needed. Because of this, the designer isn't actually used that much since your application components are designed in code, and the designer is only needed to draw a user-friendly interface that reflects your data classes (typically Models and ViewModels) And personally, ...
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How is pattern matching in Scala implemented at the bytecode level?

...atterns like or patterns and combinations like "case Foo(45, x)", but generally those are just logical extensions of what I just described. Patterns can also have guards, which are additional constraints on the predicates. There are also cases where the compiler can optimize pattern matching, e.g...
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti

...est option when the index is probably in the list and the IndexError is usually not raised. This way you avoid the need for an extra lookup by if index < len(my_list). Python encourages the use of exceptions, which you handle is a phrase from Dive Into Python. Your example not only handles the e...
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React.js: onChange event for contentEditable

...hich fixes a bug in my implementation. Use the onInput event, and optionally onBlur as a fallback. You might want to save the previous contents to prevent sending extra events. I'd personally have this as my render function. var handleChange = function(event){ this.setState({html: event.ta...