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    Is there a foreach structure in MATLAB? If so, what happens if the underlying data changes (i.e. if objects are added to the set)? See Question&Answers more detail:os...
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    In C# what does where T : class mean? Ie. public IList<T> DoThis<T>() where T : class See Question&Answers more detail:os...
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    I was browsing through some of the base Java objects when I found a section of code surrounded by a ... to correctly match answered question. See Question&Answers more detail:os...
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    Many programming languages allow trailing commas in their grammar following the last item in a list. Supposedly this ... parts of their grammar. See Question&Answers more detail:os...
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    I am new to php and would like to know if there are any differences between these server tags : <?php ?> and <? ?> See Question&Answers more detail:os...
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    [This is related to this question, but not since it's not about email.] In many cases -- especially ... is bloat in the central stylesheets. See Question&Answers more detail:os...
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    I can assign a tuple as follows: var (min, max) = (1, 2) But I cannot then re-assign as follows ( ... latter work whereas the former does not? See Question&Answers more detail:os...
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    I am getting ready for a java certification exam and I have seen code LIKE this in one of the practice tests: ... effects of these (if any)? See Question&Answers more detail:os...
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    When you are writing slightly more complex functions I notice that $ is used a lot but I don't have a clue what it does? See Question&Answers more detail:os...
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    Similar to how you can define an integer constant in hexadecimal or octal, can I do it in binary? I admit ... searches are coming up empty. See Question&Answers more detail:os...
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    Just trying to figure out how to use many multiple cases for a Java switch statement. Here's an example of ... or what a good alternative is? See Question&Answers more detail:os...
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    I've seen the @ symbol used in PowerShell to initialise arrays. What exactly does the @ symbol denote and where can I read more about it? See Question&Answers more detail:os...
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    && is notoriously hard to search for on Google Search, but the best I've found is this article which says to use ... -n myapp; ./myapp.exe. See Question&Answers more detail:os...
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    Reading through Peter Norvig's Solving Every Sudoku Puzzle essay, I've encountered a few Python idioms that I've ... value returned in the list? See Question&Answers more detail:os...
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    I can't figure out what the "| m -> w"-part means in a class definition like this: class (Monoid w, ... does this add to the class definition? See Question&Answers more detail:os...
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    Since semicolons are apparently optional in Rust, why, if I do this: fn fn1() -> i32 { let a = 1 let b = 2 ... let b = 2 | ^^^ unexpected token See Question&Answers more detail:os...
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    I have some Java code that uses curly braces in two ways // Curly braces attached to an 'if' statement: ... after the first if statement mean? See Question&Answers more detail:os...
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    I was reading an article linked from a slashdot story, and came across this little tidbit: Take the latest ... 12-programming-mistakes-avoid-292 See Question&Answers more detail:os...
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    Being new to Scala (2.9.1), I have a List[Event] and would like to copy it into a Queue[Event], but ... function just take an Iterable[A] ? See Question&Answers more detail:os...
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    EDIT: This is weird... if I double-click the Recent Projects item for the project in the welcome screen, ... ideas will be greatly appreciated. See Question&Answers more detail:os...
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    I have the following YAML: paths: patha: /path/to/root/a pathb: /path/to/root/b pathc: /path/to/root/c How ... the real syntax? Can it be done? See Question&Answers more detail:os...
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    Is there a way to write binary literals in C#, like prefixing hexadecimal with 0x? 0b doesn't work. If not ... ? Some kind of string conversion? See Question&Answers more detail:os...
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    In Python, is it possible to have multiple except statements for one try statement? Such as : try: ... xyz except ExceptionType2: #return abc See Question&Answers more detail:os...
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    What's the difference between eq, eql, equal and equalp, in Common Lisp? I understand that some of them check ... better to use than the others? See Question&Answers more detail:os...
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    What do you call the -> operator as in the following? ->(...) do ... end Aren't the following snippets equivalent? ... = lambda {|x| x + 1} See Question&Answers more detail:os...
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    Is there any significant difference between the two python keywords continue and pass like in the examples for element ... should be aware of? See Question&Answers more detail:os...
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    I just read this answer Converting upper-case string into title-case using Ruby. There is the following ... syntax error, unexpected tAMPER. See Question&Answers more detail:os...
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    I'm trying to use in Python 3.3 an old library (dating from 2003!). When I import it, Python throws me ... ) sign should I replace it with? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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