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How to avoid overflow in expr. A * B - C * D
...on which looks like:
A*B - C*D , where their types are: signed long long int A, B, C, D;
Each number can be really big (not overflowing its type). While A*B could cause overflow, at same time expression A*B - C*D can be really small. How can I compute it correctly?
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What do single quotes do in C++ when used on multiple characters?
...one c-char is a multicharacter literal . A multicharacter literal has type int and implementation-defined
value.
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RecyclerView onClick
...rride
public MyViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.myview, parent, false);
view.setOnClickListener(mOnClickListener);
return new MyViewHolder(view);
}
The onClick method:
@Override
publi...
Capture Image from Camera and Display in Activity
....cis.masl.camerademo;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MyCameraActivity extends Activity
{
private static f...
I have 2 dates in PHP, how can I run a foreach loop to go through all of those days?
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Converting to unix timestamps makes doing date math easier in php:
$startTime = strtotime( '2010-05-01 12:00' );
$endTime = strtotime( '2010-05-10 12:00' );
// Loop between timestamps, 24 hours at a time
for ( $i = $startTi...
Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
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This is a good point. I totally agree. In C++0x though, I don't quite see how the default helps enforce the above. Consider I am on the receiving end of the lambda, e.g. I am void f(const std::function<int(int)> g). How am I guaranteed ...
Checking for a null int value from a Java ResultSet
...ll value, from a ResultSet, where the column is being cast to a primitive int type.
10 Answers
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Why does C++11 not support designated initializer lists as C99? [closed]
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In other words, designated initializers support a programming style where internals are exposed, and the client is given flexibility to decide how they want to use the type.
C++ is more interested in putting the flexibility on the side of the designer of a type instead, so designers can make it e...
Android: How can I validate EditText input?
...sing OnFocusChangeListeners to trigger the validation after the user types into each one, but this doesn't behave as desired for the last EditText.
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How can I use interface as a C# generic type constraint?
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The closest you can do (except for your base-interface approach) is "where T : class", meaning reference-type. There is no syntax to mean "any interface".
This ("where T : class") is used, for example, in WCF to limit clients to service contracts (interfaces).
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