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Difference between String#equals and String#contentEquals methods
... to clarify, the == operator in Java is for checking whether two objects point to the same location in memory, or whether two primitive types (byte, short, int, long, float, double, char, boolean) are equal.
– La-comadreja
Dec 28 '13 at 13:47
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What's the best way to trim std::string?
...(), std::find_if(s.begin(), s.end(),
std::not1(std::ptr_fun<int, int>(std::isspace))));
return s;
}
// trim from end
static inline std::string &rtrim(std::string &s) {
s.erase(std::find_if(s.rbegin(), s.rend(),
std::not1(std::ptr_fun<int, int>(std...
Capture screenshot of active window?
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On HD resolution with zoomed Windows Interface elements, this class doesn't capture the whole screen.
– Yeronimo
May 7 '18 at 21:26
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Android: Vertical ViewPager [closed]
...newX, newY);
return ev;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev){
boolean intercepted = super.onInterceptTouchEvent(swapXY(ev));
swapXY(ev); // return touch coordinates to original reference frame for any child views
return interc...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
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Signed integer overflow (as strictly speaking, there is no such thing as "unsigned integer overflow") means undefined behaviour. And this means anything can happen, and discussing why does it happen under the rules of C++ doesn't ma...
Why does i = i + i give me 0?
...
The issue is due to integer overflow.
In 32-bit twos-complement arithmetic:
i does indeed start out having power-of-two values, but then overflow behaviors start once you get to 230:
230 + 230 = -231
-231 + -231 = 0
...in int arithmetic, since...
How to determine an interface{} value's “real” type?
I have not found a good resource for using interface{} types. For example
7 Answers
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Tab key == 4 spaces and auto-indent after curly braces in Vim
How do I make vi - Vim never use tabs (converting spaces to tabs, bad!), makes the tab key == 4 spaces, and automatically indent code after curly brace blocks like Emacs does?
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Assigning out/ref parameters in Moq
...on 4.8 (or later) has much improved support for by-ref parameters:
public interface IGobbler
{
bool Gobble(ref int amount);
}
delegate void GobbleCallback(ref int amount); // needed for Callback
delegate bool GobbleReturns(ref int amount); // needed for Returns
var mock = new Mock<...
Check if UIColor is dark or bright?
...l? {
let originalCGColor = self.cgColor
// Now we need to convert it to the RGB colorspace. UIColor.white / UIColor.black are greyscale and not RGB.
// If you don't do this then you will crash when accessing components index 2 below when evaluating greyscale colors.
...