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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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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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Which cryptographic hash function should I choose?
The .NET framework ships with 6 different hashing algorithms:
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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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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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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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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...
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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Bootstrapping still requires outside support
I've heard of the idea of bootstrapping a language, that is, writing a compiler/interpreter for the language in itself. I was wondering how this could be accomplished and looked around a bit, and saw someone say that it could only be done by either
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class
What does class << self do in Ruby ?
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