大约有 42,000 项符合查询结果(耗时:0.0460秒) [XML]

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What is the JavaScript version of sleep()?

Is there a better way to engineer a sleep in JavaScript than the following pausecomp function ( taken from here )? 78 A...
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Insert line after first match using sed

For some reason I can't seem to find a straightforward answer to this and I'm on a bit of a time crunch at the moment. How would I go about inserting a choice line of text after the first line matching a specific string using the sed command. I have ... ...
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Why is volatile not considered useful in multithreaded C or C++ programming?

As demonstrated in this answer I recently posted, I seem to be confused about the utility (or lack thereof) of volatile in multi-threaded programming contexts. ...
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Is there a REAL performance difference between INT and VARCHAR primary keys?

Is there a measurable performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables. ...
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What is difference between functional and imperative programming languages?

Most of the mainstream languages, including object-oriented programming (OOP) languages such as C#, Visual Basic, C++, and Java were designed to primarily support imperative (procedural) programming, whereas Haskell/gofer like languages are purely functional. Can anybody elaborate on what is the dif...
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Combined area of overlapping circles

I recently came across a problem where I had four circles (midpoints and radius) and had to calculate the area of the union of these circles. ...
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Implements vs extends: When to use? What's the difference?

Please explain in an easy to understand language or a link to some article. 18 Answers ...
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The difference between sys.stdout.write and print?

Are there situations in which sys.stdout.write() is preferable to print ? 15 Answers ...
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Why do we use arrays instead of other data structures?

As I was programming, I haven't seen an instance where an array is better for storing information than another form thereof. I had indeed figured the added "features" in programming languages had improved upon this and by that replaced them. I see now that they aren't replaced but rather given new ...
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C# SQL Server - Passing a list to a stored procedure

I am calling a SQL Server stored procedure from my C# code: 8 Answers 8 ...