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How do you copy the contents of an array to a std::vector in C++ without looping?
...e structure, so I chose a std::vector . I don't want to have to do the standard loop to push_back all the values individually, it would be nice if I could just copy it all using something similar to memcpy .
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How to shuffle a std::vector?
...but I think it's not very efficient because it needs an intermediate array and it needs to know the item type (DeckCard in this example):
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Get visible items in RecyclerView
...d to work with View.getGlobalVisibleRect(...) , but that hack is too ugly and does not always work too.
9 Answers
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Difference between UTF-8 and UTF-16?
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The fastest way to convert String to byte array is something like that, posted down as sample
– bestsss
Jan 11 '11 at 19:27
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Why should I prefer to use member initialization lists?
... this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the initializer list:
B()
: a(3)
{
}
This would only call A's A(int) constructor and not its default constructo...
Difference between break and continue statement
Can anyone tell me the difference between break and continue statements?
21 Answers
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How to change position of Toast in Android?
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From the documentation,
Positioning your Toast
A standard toast notification appears near the bottom of the screen,
centered horizontally. You can change this position with the
setGravity(int, int, int) method. This accepts three parameters: a
Gravity constant, an x-pos...
Defining static const integer members in class definition
My understanding is that C++ allows static const members to be defined inside a class so long as it's an integer type.
7 An...
How do I put a border around an Android textview?
...t a shape drawable (a rectangle) as background for the view.
<TextView android:text="Some text" android:background="@drawable/back"/>
And rectangle drawable back.xml (put into res/drawable folder):
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangl...
Structure padding and packing
...alignment of the whole struct in an array */
} x;
Packing, on the other hand prevents compiler from doing padding - this has to be explicitly requested - under GCC it's __attribute__((__packed__)), so the following:
struct __attribute__((__packed__)) mystruct_A {
char a;
int b;
char c...