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Java ArrayList how to add elements at the beginning
...tructure which offers methods like addFirst(e) and offerFirst(e)
Deque<String> deque = new LinkedList<>();
deque.add("two");
deque.add("one");
deque.addFirst("three");
//prints "three", "two", "one"
Analysis
Space and time complexity of insertion is with LinkedList constant (O(1)). S...
How can I add an item to a SelectList in ASP.net MVC
...if you actually do insist on the value of 0? If the value is null/an empty string, it can cause problems with model binding.
– Kjensen
Nov 12 '09 at 13:45
2
...
Fragment onCreateView and onActivityCreated called twice
...vate Fragment mFragment;
private Activity mActivity;
private final String mTag;
private final Class<T> mClass;
public TabListener(Activity activity, String tag, Class<T> clz) {
mActivity = activity;
mTag = tag;
mClass = clz;
mFragment=mAct...
How do you convert a time.struct_time object into a datetime object?
...Assuming you have both a time.struct_time object, and some other date/time string, compare the two, and be sure you are not losing data and inadvertently creating a naive datetime object, when you can do otherwise.
For example, the excellent feedparser module will return a "published" field and may...
Copy to clipboard in Node.js?
...oc.stdin.write(data); proc.stdin.end();
}
write() can take a buffer or a string. The default encoding for a string will be utf-8.
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Static Block in Java [duplicate]
...-up map it could look like this
class MyClass {
static Map<Double, String> labels;
static {
labels = new HashMap<Double, String>();
labels.put(5.5, "five and a half");
labels.put(7.1, "seven point 1");
}
//...
}
It's useful since the above stati...
How to determine if a type implements a specific generic interface type
...neric interface.
You will have to do something like this:
foo is IBar<String>
because IBar<String> represents that constructed type. The reason you have to do this is because if T is undefined in your check, the compiler doesn't know if you mean IBar<Int32> or IBar<Somethin...
Generate random int value from 3 to 6
...- @min + 1)) + @min
Updated based on comments:
NEWID generates random string (for each row in return)
CHECKSUM takes value of string and creates number
modulus (%) divides by that number and returns the remainder (meaning max value is one less than the number you use)
ABS changes negative res...
How to calculate number of days between two dates
...
here is the signature : moment().diff(Moment|String|Number|Date|Array, String, Boolean);
– Sumit
May 17 '18 at 11:43
...
Variable declaration in a C# switch statement [duplicate]
...the case in its own block:
switch (Type)
{
case Type.A:
{
string variable = "x";
/* Do other stuff with variable */
}
break;
case Type.B:
{
string variable = "y";
/* Do other stuff with variable */
}
break;
}
...