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Default value to a parameter while passing by reference in C++
... way round this would be to use an actual instance as the default:
static int AVAL = 1;
void f( int & x = AVAL ) {
// stuff
}
int main() {
f(); // equivalent to f(AVAL);
}
but this is of very limited practical use.
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Is there a range class in C++11 for use with range based for loops?
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There has been much progress lately to get ranges into the standard (N4128). See github.com/ericniebler/range-v3 for a proposal and reference implementation.
– Ela782
Feb 21 '15 at 19:27
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Is there a common Java utility to break a list into batches?
I wrote myself a utility to break a list into batches of given size. I just wanted to know if there is already any apache commons util for this.
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How to find all combinations of coins when given some dollar value
I found a piece of code that I was writing for interview prep few months ago.
35 Answers
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Parsing a comma-delimited std::string [duplicate]
...mbers, what's the simplest way to parse out the numbers and put them in an integer array?
18 Answers
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Why is division in Ruby returning an integer instead of decimal value?
...t; 1.8
This also works if your values are variables instead of literals. Converting one value to a float is sufficient to coerce the whole expression to floating point arithmetic.
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Why can I initialize a List like an array in C#?
...f the initializer.
Thus, these two blocks are roughly identical:
List<int> a = new List<int> { 1, 2, 3 };
And
List<int> temp = new List<int>();
temp.Add(1);
temp.Add(2);
temp.Add(3);
List<int> a = temp;
You can call an alternate constructor if you want, for examp...
What is the difference between JDK and JRE?
...rver. Why would you need the JDK then? Because the application server will convert JSP into Java servlets and needs to use the JDK to compile the servlets. I am sure that there are more examples.
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How to use `string.startsWith()` method ignoring the case?
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One option is to convert both of them to either lowercase or uppercase:
"Session".toLowerCase().startsWith("sEsSi".toLowerCase());
This is wrong. See: https://stackoverflow.com/a/15518878/14731
Another option is to use String#regionMat...
C++ sorting and keeping track of indexes
...alues) : _values(values) {} public: bool operator() (const int& a, const int& b) const { return (_values)[a] > (_values)[b]; } };
– Yoav
Oct 18 '12 at 7:47
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