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How to get a resource id with a known resource name?
...t to access a resource like a String or a Drawable by its name and not its int id.
10 Answers
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Predicate Delegates in C#
...ons.Generic;
class Program
{
static void Main()
{
List<int> list = new List<int> { 1, 2, 3 };
Predicate<int> predicate = new Predicate<int>(greaterThanTwo);
List<int> newList = list.FindAll(predicate);
}
static bool greaterTha...
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:
...
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 ...
Fastest way to get the first object from a queryset in django?
... @Ben: QuerySet.__nonzero__() is never called since the QuerySet is converted to a list before checking for trueness. Other exceptions may still occur however.
– Ignacio Vazquez-Abrams
Feb 26 '11 at 0:07
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How to “properly” print a list?
...f the steps in @TokenMacGuy's one-liner. First he uses the map function to convert each item in the list to a string (actually, he's making a new list, not converting the items in the old list). Then he's using the string method join to combine those strings with ', ' between them. The rest is just ...
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
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