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Builder Pattern in Effective Java
...Bloch. I found the idea of the Builder pattern [Item 2 in the book] really interesting. I tried to implement it in my project but there were compilation errors. Following is in essence what I was trying to do:
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Random date in C#
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DateTime RandomDay()
{
DateTime start = new DateTime(1995, 1, 1);
int range = (DateTime.Today - start).Days;
return start.AddDays(gen.Next(range));
}
For better performance if this will be called repeatedly, create the start and gen (and maybe even range) variables outside ...
Implement Stack using Two Queues
...:
while size of queue1 is bigger than 1, pipe dequeued items from queue1 into queue2
dequeue and return the last item of queue1, then switch the names of queue1 and queue2
Version B (efficient pop):
push:
enqueue in queue2
enqueue all items of queue1 in queue2, then switch the names of queu...
Int or Number DataType for DataAnnotation validation attribute
...o use different different range validation as per your requirements :
For Integer
[Range(0, int.MaxValue, ErrorMessage = "Please enter valid integer Number")]
for float
[Range(0, float.MaxValue, ErrorMessage = "Please enter valid float Number")]
for double
[Range(0, double.MaxValue, ErrorMe...
“int main (vooid)”? How does that work?
...he "old-style" function-declaration syntax; you're implicitly declaring an int parameter called vooid.
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How to check for file lock? [duplicate]
... the purpose you need the file, and then handle the lock problem at that point. And then, as you say, wait, or deal with it in another way.
– Lasse V. Karlsen
Oct 8 '10 at 8:06
2
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How to break out of nested loops?
... @ugoren It's also so simple then. what if you used a const int count =1000 , in the global Initialization. or as a #define macro.
– Laksith
Oct 19 '15 at 7:37
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Creating a constant Dictionary in C#
...to create a constant (never changes at runtime) mapping of string s to int s?
10 Answers
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Pointer to pointer clarification
I was following this tutorial about how does a pointer to a pointer work.
16 Answers
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C++ new int[0] — will it allocate memory?
...ray with no elements.
From 3.7.3.1/2
The effect of dereferencing a pointer returned as a request for zero size is undefined.
Also
Even if the size of the space requested [by new] is zero, the request can fail.
That means you can do it, but you can not legally (in a well defined manner ...