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What is the instanceof operator in JavaScript?
The instanceof keyword in JavaScript can be quite confusing when it is first encountered, as people tend to think that JavaScript is not an object-oriented programming language.
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Which cryptographic hash function should I choose?
The .NET framework ships with 6 different hashing algorithms:
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How do I generate random number for each row in a TSQL Select?
I need a different random number for each row in my table. The following seemingly obvious code uses the same random value for each row.
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When you exit a C application, is the malloc-ed memory automatically freed?
Let's say I have the following C code:
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How do I concatenate or merge arrays in Swift?
If there are two arrays created in swift like this:
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Are there disadvantages to using a generic varchar(255) for all text-based fields?
I have a contacts table which contains fields such as postcode , first name , last name , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way becaus...
class
What does class << self do in Ruby ?
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Where do I use delegates? [closed]
What are some real world places that call for delegates? I'm curious what situations or patterns are present where this method is the best solution. No code required.
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How do I disable a href link in JavaScript?
I have a tag <a href="#"> Previous </a> 1 2 3 4 <a href="#"> Next </a> and in some conditions I want this tag to be completely disabled.
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Forward declaration of nested types/classes in C++
I recently got stuck in a situation like this:
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