大约有 16,000 项符合查询结果(耗时:0.0343秒) [XML]

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error: passing xxx as 'this' argument of xxx discards qualifiers

...ects in the std::set are stored as const StudentT. So when you try to call getId() with the const object the compiler detects a problem, mainly you're calling a non-const member function on const object which is not allowed because non-const member functions make NO PROMISE not to modify the object...
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What is the difference between “text” and new String(“text”)?

What is the difference between these two following statements? 12 Answers 12 ...
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]

I understand the basics of how ports work. However, what I don't get is how multiple clients can simultaneously connect to say port 80. I know each client has a unique (for their machine) port. Does the server reply back from an available port to the client, and simply state the reply came from 80? ...
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How do I capture the output into a variable from an external process in PowerShell?

...apture it's command output to a variable in PowerShell. I'm currently using this: 9 Answers ...
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Why does Math.Round(2.5) return 2 instead of 3?

... Firstly, this wouldn't be a C# bug anyway - it would be a .NET bug. C# is the language - it doesn't decide how Math.Round is implemented. And secondly, no - if you read the docs, you'll see that the default rounding is "round to even" (banker's ro...
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MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET

What is main difference between INSERT INTO table VALUES .. and INSERT INTO table SET ? 3 Answers ...
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What does middleware and app.use actually mean in Expressjs?

...ion of what middleware actually is and what the app.use statement is doing. Even the express docs themselves are a bit vague on this. Can you explain these concepts for me please? ...
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Ways to circumvent the same-origin policy

...fix of the current domain. If it does so, the shorter domain is used for subsequent origin checks. For example, assume a script in the document at http://store.company.com/dir/other.html executes the following statement: document.domain = "company.com"; After that statement executes, the page wou...
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Best place to insert the Google Analytics code [duplicate]

Where’s the best place to insert the Google Analytics code in WordPress, header or footer? I prefer footer, because I wanted my site to load faster by reducing the number of scripts in the header, but can it work even if the script is in the footer? ...
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Batch file include external file for variables

I have a batch file and I want to include external file containing some variables (say configuration variables). Is it possible? ...