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Big-oh vs big-theta [duplicate]

It seems to me like when people talk about algorithm complexity informally, they talk about big-oh. But in formal situations, I often see big-theta with the occasional big-oh thrown in. I know mathematically what the difference is between the two, but in English, in what situation would using big-oh...
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RESTful API methods; HEAD & OPTIONS

I'm writing a RESTful API module for an application in PHP, and I'm a bit mixed on the verbs HEAD and OPTIONS . 3 Answer...
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What is the difference between service, directive and module?

I have been reading a lot of docs, and I'm getting more and more confused. I basically can't figure out the difference between a ...
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Constructors vs Factory Methods [closed]

When modelling classes, what is the preferred way of initializing: 10 Answers 10 ...
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Rename a git submodule

Is there some easy way to rename a git submodule directory (other than going through the entire motion of deleting it and re-adding it with a new destination name). ...
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Why are trailing commas allowed in a list?

I am curious why in Python a trailing comma in a list is valid syntax, and it seems that Python simply ignores it: 5 Answer...
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How do I create a new line in Javascript?

I am printing a pyramid of stars, I can't get the new line to print. 17 Answers 17 ...
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Where do you store your salt strings?

I've always used a proper per-entry salt string when hashing passwords for database storage. For my needs, storing the salt in the DB next to the hashed password has always worked fine. ...
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Why dict.get(key) instead of dict[key]?

Today, I came across the dict method get which, given a key in the dictionary, returns the associated value. 10 Answers...
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Is there a concurrent List in Java's JDK?

How can I create a concurrent List instance, where I can access elements by index? Does the JDK have any classes or factory methods I can use? ...