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Can I pass an array as arguments to a method with variable arguments in Java?
...ompatibility.
So you should just be able to prepend extraVar to args and call String.format(format, args).
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Do you (really) write exception safe code? [closed]
...hen, answer the hidden question behind them.
Answering questions
Do you really write exception safe code?
Of course, I do.
This is the reason Java lost a lot of its appeal to me as a C++ programmer (lack of RAII semantics), but I am digressing: This is a C++ question.
It is, in fact, necessary whe...
How expensive is RTTI?
...where I've looked just says that "RTTI is expensive," but none of them actually give any benchmarks or quantitative data reguarding memory, processor time, or speed.
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Nullable vs. int? - Is there any difference?
...ression term ';'
If you are curious about the exact reason for this, I really recommend you to check the already linked question, but the basic problem is that in the parsing phase after an is (or an as) operator, when we face a ? token we check if the next token can be interpreted as a unary oper...
Foreign Key to non-primary key
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If you really want to create a foreign key to a non-primary key, it MUST be a column that has a unique constraint on it.
From Books Online:
A FOREIGN KEY constraint does not have to be linked only to a PRIMARY
KEY constraint in...
Algorithm to generate all possible permutations of a list?
...n! possible ways to order these elements. What is an algorithm to generate all possible orderings of this list? Example, I have list [a, b, c]. The algorithm would return [[a, b, c], [a, c, b,], [b, a, c], [b, c, a], [c, a, b], [c, b, a]].
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LINQ - Left Join, Group By, and Count
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.Count() will generate COUNT(*) which will count all the rows in that group, by the way.
– Mehrdad Afshari
Mar 29 '09 at 22:47
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Read-only list or unmodifiable list in .NET 4.0
...that's not a List, it's a Collection. So if you use it, you need to modify all your code to use Collection instead of List.
– Roman Zabicki
May 25 '16 at 13:50
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How to add images to README.md on GitHub?
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32 Answers
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How to get current moment in ISO 8601 format with date, hour, and minute?
...ad safe.
ZonedDateTime.now( ZoneOffset.UTC ).format( DateTimeFormatter.ISO_INSTANT )
Result: 2015-04-14T11:07:36.639Z
You may be tempted to use lighter Temporal such as Instant or LocalDateTime,
but they lacks formatter support or time zone data.
Only ZonedDateTime works out of the box.
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