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What is an existential type?
...r bottoms.
Since an existential is a pair, an existential argument can be converted to a universal one via currying.
(∃b. F(b)) -> Int
is the same as:
∀b. (F(b) -> Int)
The former is a rank-2 existential. This leads to the following useful property:
Every existentially quantifie...
Best way to reverse a string
...or (int i = 0; i < length; i++)
{
sb.Append(Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65))));
}
return sb.ToString();
}
static void Main(string[] args)
{
int[] lengths = new int[] ...
How to calculate time elapsed in bash script?
...ed:
an integer that represents the count of elapsed seconds and
a way to convert such integer to an usable format.
An integer value of elapsed seconds:
There are two bash internal ways to find an integer value for the number of elapsed seconds:
Bash variable SECONDS (if SECONDS is unset it...
Iterate keys in a C++ map
...
EDIT::
In case you want to expose only the keys to outside then you can convert the map to vector or keys and expose.
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How does Task become an int?
...e without the await - with T foo = someTaskT; you'd get "Cannot implicitly convert type Task<T> to T" - in the same way I argue that it would make more sense to have a keyword for the inverse (wrapping in Task<T>). I'm all for removing fluff but in this case I think it provides an unnece...
What is the preferred/idiomatic way to insert into a map?
...l require an additional call to std::pair template constructor in order to convert to value_type (ie : adding const to first_type)
std::pair<int, int> will also require an additional call to the template constructor of std::pair in order to convert the parameter to value_type (ie : adding cons...
How to convert Java String into byte[]?
Is there any way to convert Java String to a byte[] ( not the boxed Byte[] )?
8 Answers
...
Java List.add() UnsupportedOperationException
...d to insert the record in java.util.ArrayList or use the below approach to convert into ArrayList.
With the minimal change in your code, you can do below to convert a list to ArrayList. The first solution is having a minimum change in your solution, but the second one is more optimized, I guess.
...
Should you always favor xrange() over range()?
...din>", line 1, in <module>
OverflowError: Python int too large to convert to C long
Python 3 does not have this problem:
Python 3.2.3 (default, Jul 14 2012, 01:01:48)
[GCC 4.7.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> range(12345678...
Android: android.content.res.Resources$NotFoundException: String resource ID #0x5
...he error in setText() method
Solution is simple put your Integer value by converting into string type
as
textview.setText(Integer.toString(integer_value));
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