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How can I convert String[] to ArrayList [duplicate]
I need to convert a String[] to an ArrayList<String> and I don't know how
6 Answers
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Which is more efficient, a for-each loop, or an iterator?
...ter.
If however, you mean by loop the old "c-style" loop:
for(int i=0; i<list.size(); i++) {
Object o = list.get(i);
}
Then the new for loop, or iterator, can be a lot more efficient, depending on the underlying data structure. The reason for this is that for some data structures, get(i) i...
How to include a child object's child object in Entity Framework 5
...Province) .FirstOrDefault(x => x.UserId == userId);
– Geovani Martinez
Dec 28 '18 at 0:45
...
What's the best way to do a backwards loop in C/C#/C++?
...s
C++ allows you to do this using std::reverse_iterator:
for(std::vector<T>::reverse_iterator it = v.rbegin(); it != v.rend(); ++it) {
/* std::cout << *it; ... */
}
Using indices
The unsigned integral type returned by std::vector<T>::size is not always std::size_t. It can ...
How do I update the GUI from another thread?
...should use this code:
private delegate void SetPropertyThreadSafeDelegate<TResult>(
Control @this,
Expression<Func<TResult>> property,
TResult value);
public static void SetPropertyThreadSafe<TResult>(
this Control @this,
Expression<Func<TResult...
Is the practice of returning a C++ reference variable evil?
...nction, use a smart pointer (or in general, a container):
std::unique_ptr<int> getInt() {
return std::make_unique<int>(0);
}
And now the client stores a smart pointer:
std::unique_ptr<int> x = getInt();
References are also okay for accessing things where you know the life...
Calculating text width
...xtWidth = function(){
var html_org = $(this).html();
var html_calc = '<span>' + html_org + '</span>';
$(this).html(html_calc);
var width = $(this).find('span:first').width();
$(this).html(html_org);
return width;
};
...
Create instance of generic type whose constructor requires a parameter?
...
This one worked out fine. There's also a CreateInstance<T>() procedure, but that doesn't have an overload for parameters for some rason..
– Boris Callens
Apr 12 '09 at 11:29
...
Test if characters are in a string
...ingle long string, try finding 1 match in a bunch of shorter strings: vec <- replicate(100000, paste( sample(letters, 10, replace=TRUE), collapse='') ).
– Greg Snow
Apr 12 '12 at 19:52
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How to copy a java.util.List into another java.util.List
I have a List<SomeBean> that is populated from a Web Service. I want to copy/clone the contents of that list into an empty list of the same type. A Google search for copying a list suggested me to use Collections.copy() method. In all the examples I saw, the destination list was supposed t...