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Adding a column to an existing table in a Rails migration
I have a Users model which needs an :email column (I forgot to add that column during the initial scaffold).
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Unit testing Anti-patterns catalogue
anti-pattern : there must be at least two key elements present to formally distinguish an actual anti-pattern from a simple bad habit, bad practice, or bad idea:
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Using G++ to compile multiple .cpp and .h files
I've just inherited some C++ code that was written poorly with one cpp file which contained the main and a bunch of other functions. There are also .h files that contain classes and their function definitions.
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TypeError: $ is not a function when calling jQuery function
I have a simple jQuery script in a WordPress plugin that is using a jQuery wrapper like this:
16 Answers
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What makes Scala's operator overloading “good”, but C++'s “bad”?
Operator overloading in C++ is considered by many to be A Bad Thing(tm), and a mistake not to be repeated in newer languages. Certainly, it was one feature specifically dropped when designing Java.
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Getter and Setter?
I'm not a PHP developer, so I'm wondering if in PHP is more popular to use explicit getter/setters, in a pure OOP style, with private fields (the way I like):
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How to set time delay in javascript
... click the img_onclick.jpg image there should then be a delay of 1000ms before the img.jpg is shown again.
8 Answers
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Is there a limit on how much JSON can hold?
I am using jquery, JSON, and AJAX for a comment system. I am curious, is there a size limit on what you can send through/store with JSON? Like if a user types a large amount and I send it through JSON is there some sort of maximum limit?
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How to view/delete local storage in Firefox?
In Google Chrome there is an easy way to see what's in local storage as well as modify or delete it after inspecting it.
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How to check if a string contains text from an array of substrings in JavaScript?
Pretty straight forward. In javascript, I need to check if a string contains any substrings held in an array.
21 Answers
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