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std::function vs template
... that can be called with the given argument types and whose return type is convertible to the given return type from the same code.
void eval(const std::function<int(int)>& f) {
std::cout << f(3);
}
int f1(int i) {
return i;
}
float f2(double d) {
return d;
}
int main...
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...
Difference between DirectCast() and CType() in VB.NET
.... It will do things you just can't do with a simple (int)-style cast, like convert a string to an integer. It has as much power as calling Convert.To___() in C#, where the ___ is the target type of your cast.
This is desirable because it's very powerful. However, this power comes at the cost of per...
How to convert byte array to string and vice versa?
I have to convert a byte array to string in Android, but my byte array contains negative values.
22 Answers
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Pointers in C: when to use the ampersand and the asterisk?
...
Arrays are special and can be converted to pointers transparently. This highlights another way to get from a pointer to a value, I'll add it to the explanation above.
– Dan Olson
Jan 19 '10 at 18:58
...
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.
...
Using Custom Domains With IIS Express
...re
Let's use your example of the DNS name dev.example.com
edit %windows%\system32\drivers\etc\hosts file to map dev.example.com to 127.0.0.1 (admin privilege required). If you control DNS server (like in Nick's case) then the DNS entry is sufficient as this step is not needed.
If you access intern...
Calculate a MD5 hash from a string
...nput);
byte[] hashBytes = md5.ComputeHash(inputBytes);
// Convert the byte array to hexadecimal string
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hashBytes.Length; i++)
{
sb.Append(hashBytes[i].ToString("X2"));
}
...
Convert a timedelta to days, hours and minutes
... // 3600, td.seconds // 60 % 60
As for DST, I think the best thing is to convert both datetime objects to seconds. This way the system calculates DST for you.
>>> m13 = datetime(2010, 3, 13, 8, 0, 0) # 2010 March 13 8:00 AM
>>> m14 = datetime(2010, 3, 14, 8, 0, 0) # DST starts...
How to convert a PIL Image into a numpy array?
Alright, I'm toying around with converting a PIL image object back and forth to a numpy array so I can do some faster pixel by pixel transformations than PIL's PixelAccess object would allow. I've figured out how to place the pixel information in a useful 3D numpy array by way of:
...