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How to detect internet speed in JavaScript?

How can I create a JavaScript page that will detect the user’s internet speed and show it on the page? Something like “your internet speed is ??/?? Kb/s” . ...
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Programmatically retrieve memory usage on iPhone

I'm trying to retrieve the amount of memory my iPhone app is using at anytime, programmatically. Yes I'm aware about ObjectAlloc/Leaks. I'm not interested in those, only to know if it's possible to write some code and get the amount of bytes being used and report it via NSLog. ...
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In C#, should I use string.Empty or String.Empty or “” to intitialize a string?

In C#, I want to initialize a string value with an empty string. 30 Answers 30 ...
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What are the differences between git branch, fork, fetch, merge, rebase and clone?

I want to understand the difference between a branch, a fork and a clone in Git? 5 Answers ...
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Python using enumerate inside list comprehension

Lets suppose I have a list like this: 7 Answers 7 ...
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Django in / not in query

I'm trying to figure out how to write a 'not in' style query in django. For example, the query structure I'm thinking of would look like this. ...
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What does the git index contain EXACTLY?

What does the Git index exactly contain, and what command can I use to view the content of the index? 5 Answers ...
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How to identify numpy types in python?

How can one reliably determine if an object has a numpy type? 6 Answers 6 ...
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Big-O for Eight Year Olds? [duplicate]

I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...
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Does Ruby have a string.startswith(“abc”) built in method?

Does Ruby have a some_string.starts_with("abc") method that's built in? 4 Answers 4 ...