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Vim: What's the difference between let and set?

What's the difference between let and set in the vim editor? 5 Answers 5 ...
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Is there any async equivalent of Process.Start?

Like the title suggests, is there an equivalent to Process.Start (allows you run another application or batch file) that I can await? ...
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Calculate the median of a billion numbers

If you have one billion numbers and one hundred computers, what is the best way to locate the median of these numbers? 25 A...
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How to properly URL encode a string in PHP?

I'm making a search page, where you type a search query and the form is submitted to search.php?query=your query . What PHP function is the best and that I should use for encoding/decoding the search query? ...
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When to call activity context OR application context?

There has been a lot of posting about what these two contexts are.. But I'm still not getting it quite right 7 Answers ...
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what is the difference between ?:, ?! and ?= in regex?

I searched for the meaning of these expressions but couldn't understand the exact difference between them. This is what they say: ...
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Using arrays or std::vectors in C++, what's the performance gap?

In our C++ course they suggest not to use C++ arrays on new projects anymore. As far as I know Stroustroup himself suggests not to use arrays. But are there significant performance differences? ...
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PowerShell: Store Entire Text File Contents in Variable

I'd like to use PowerShell to store the entire contents of a text file (including the trailing blank line that may or may not exist) in a variable. I'd also like to know the total number of lines in the text file. What's the most efficient way to do this? ...
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What's the difference between a Future and a Promise?

What's the difference between Future and Promise ? They both act like a placeholder for future results, but where is the main difference? ...
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Proper REST response for empty table?

Let's say you want to get list of users by calling GET to api/users , but currently the table was truncated so there are no users. What is the proper response for this scenario: 404 or 204 ? ...