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How do you find the sum of all the numbers in an array in Java?
I'm having a problem finding the sum of all of the integers in an array in Java. I cannot find any useful method in the Math class for this.
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What is x after “x = x++”?
... I know this is super old, but I have a question. Is the above order of operation guaranteed by the standard? Is it possible that the assignment is executed before the increment?
– Emerald Weapon
Apr 24 '16 at 14:35
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In log4j, does checking isDebugEnabled before logging improve performance?
...nd once in debug() method. The cost of invoking isDebugEnabled() is in the order of 5 to 30 nanoseconds which should be negligible for most practical purposes. Thus, option 2 is not desirable because it pollutes your code and provides no other gain.
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What is an unsigned char?
...char)-1;
It also follows that a conversion is not just truncating higher order bits. The fortunate event for two's complement is that it is just a truncation there, but the same isn't necessarily true for other sign representations.
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Getting a structural type with an anonymous class's methods from a macro
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Should I pass a shared_ptr by reference? [duplicate]
...t. Let us define a shared pointer type SF = std::shared_ptr<Foo>. In order to consider references, rather than passing function arguments let us look at the type RSF = std::reference_wrapper<T>. That is, if we have a shared pointer SF p(std::make_shared<Foo>());, then we can make a...
How to access SOAP services from iPhone
...OK obviously that isn't a real answer. But still SOAP should be avoided at all costs. ;-) Is it possible to add a proxy server between the iPhone and the web service? Perhaps something that converts REST into SOAP for you?
You could try CSOAP, a SOAP library that depends on libxml2 (which is includ...
Oracle SQL escape character (for a '&')
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the & is the default value for DEFINE, which allows you to use substitution variables. I like to turn it off using
SET DEFINE OFF
then you won't have to worry about escaping or CHR(38).
sha...
How to get time in milliseconds since the unix epoch in Javascript? [duplicate]
How can I get the current epoch time in Javascript? Basically the number of milliseconds since midnight, 1970-01-01.
2 A...
Row Offset in SQL Server
...2005+
SELECT col1, col2
FROM (
SELECT col1, col2, ROW_NUMBER() OVER (ORDER BY ID) AS RowNum
FROM MyTable
) AS MyDerivedTable
WHERE MyDerivedTable.RowNum BETWEEN @startRow AND @endRow
SQL Server 2000
Efficiently Paging Through Large Result Sets in SQL Server 2000
A More Efficient Method...