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What exactly does the .join() method do?
... using the JOIN method, we can add the distance between the words and also convert the list to the string.
This is Python output
'my name is kourosh'
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How to work with complex numbers in C?
.../
#include <complex.h> /* Standard Library of Complex Numbers */
int main() {
double complex z1 = 1.0 + 3.0 * I;
double complex z2 = 1.0 - 4.0 * I;
printf("Working with complex numbers:\n\v");
printf("Starting values: Z1 = %.2f + %.2fi\tZ2 = %.2f %+.2fi\n", creal(z1), ci...
Count number of rows within each group
... standard nowadays to use .() instead of list() and setDT() to convert a data.frame to data.table. So in one step setDT(df)[, .N, by = .(year, month)].
– sindri_baldur
Sep 27 '19 at 11:33
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How does HashSet compare elements for equality?
...hat means you have two options:
Pass a custom IEqualityComparer<T> into the constructor. This is the best option if you can't modify the T itself, or if you want a non-default equality relation (e.g. "all users with a negative user ID are considered equal"). This is almost never implemented ...
How to programmatically take a screenshot on Android?
... FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
openScreenshot(imageFile);
} catch (Throwable e) {
...
void in C# generics?
...opeful that maybe things might work like that eventually. Does your last point mean that we are not likely to ever have things work that way?
– Dave Cousineau
Jul 3 '12 at 20:56
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What is the best way to dump entire objects to a log in C#?
...rays (it just displays the type and the length of the array, but doesn't print its contents).
– Konrad Morawski
Sep 20 '12 at 6:57
5
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Data access object (DAO) in Java
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The Data Access Object is basically an object or an interface that provides access to an underlying database or any other persistence storage.
That definition from:
http://en.wikipedia.org/wiki/Data_access_object
Check also the sequence diagram here:
http://www.oracle.com/...
Iterate through a C++ Vector using a 'for' loop
...ng over container elements uses iterators, something like:
std::vector<int>::iterator it = vector.begin();
This is because it makes the code more flexible.
All standard library containers support and provide iterators. If at a later point of development you need to switch to another contai...
Printing leading 0's in C?
...i, o, u, x, X, a, A, e,
E, f, F, g, and G conversions, the converted value is padded on
the left with zeros rather than blanks. If the 0 and - flags
both appear, the 0 flag is ignored. If a precision is given
with a numeric c...