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Best practices for SQL varchar column length [closed]
Every time is set up a new SQL table or add a new varchar column to an existing table, I am wondering one thing: what is the best value for the length .
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How to scale down a range of numbers with a known min and max value
So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find t...
Is there any reason to use a synchronous XMLHttpRequest?
It seems most everyone does asynchronous requests with XMLHttpRequest but obviously the fact that there is the ability to do synchronous requests indicates there might be a valid reason to do so. So what might that valid reason be?
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How is an overloaded method chosen when a parameter is the literal null value?
I came across this question in a quiz,
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Database sharding vs partitioning
I have been reading about scalable architectures recently. In that context, two words that keep on showing up with regards to databases are sharding and partitioning . I looked up descriptions but still ended up confused.
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What is the difference between YAML and JSON?
What are the differences between YAML and JSON, specifically considering the following things?
13 Answers
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Why doesn't Python have a sign function?
I can't understand why Python doesn't have a sign function. It has an abs builtin (which I consider sign 's sister), but no sign .
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Difference between events and delegates and its respective applications [closed]
I don't see advantages of using events over delegates, other than being syntactical sugar. Perhaps I am misunderstanding, but it seems that event is just a placeholder for delegate.
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Difference between Key, Primary Key, Unique Key and Index in MySQL
When should I use KEY , PRIMARY KEY , UNIQUE KEY and INDEX ?
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