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Why can tuples contain mutable items?
...ore memory efficient to create because there's no need for overallocation, etc. They're a bit slower than lists for random item access, but faster again for unpacking (at least on my machine). If tuples were mutable, then they wouldn't be as fast for purposes such as these.
Tuples are general-purpos...
Showing a different background colour in Vim past 80 characters
...s setting as a string every time it enters a window, initializes a buffer, etc, so this is kind of an expensive way of achieving the desired result.
– cptstubing06
Mar 8 '13 at 4:08
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How to do a SOAP Web Service call from Java class?
...Web Service endpoint) stops working or starts giving erros (like 500, 503, etc), please let me know so I can fix it.
– acdcjunior
Aug 11 '17 at 23:05
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Sorting an ArrayList of objects using a custom sorting order
... if (o1 != null && o2 != null) {
o1 = o1.getClass().getMethod(getter, new Class[0]).invoke(o1, new Object[0]);
o2 = o2.getClass().getMethod(getter, new Class[0]).invoke(o2, new Object[0]);
}
} catch (Exception e) {
// I...
Why is (object)0 == (object)0 different from ((object)0).Equals((object)0)?
...hing you said is incorrect, about the ints, heap, history, global statics, etc. 0.ReferenceEquals(0) will fail because you are trying to call a method on a compile time constant. there is no object to hang it off. An unboxed int is a struct, stored on the stack. Even int i = 0; i.ReferenceEquals...
How to make an ImageView with rounded corners?
...nt.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
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invalid command code ., despite escaping periods, using sed
...main contain / ? If so, try using separator other than / in sed, e.g. #, , etc.
find ./ -type f -exec sed -i 's#192.168.20.1#new.domain.com#' {} \;
It would also be good to enclose s/// in single quote rather than double quote to avoid variable substitution or any other unexpected behaviour
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When should I use a struct instead of a class?
...
Use a structure if:
It will act like a primitive type (int, long, byte, etc.).
It must have a small memory footprint.
You are calling a P/Invoke method that requires a structure to be passed in by
value.
You need to reduce the impact of garbage collection on application performance.
Its fields ne...
Initializing a static std::map in C++
...ive, "Selective" },
{ CacheMode::None, "None" }
// etc
};
};
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Subset of rows containing NA (missing) values in a chosen column of a data frame
...
Could you explain why this works, what this does etc.?
– csilk
Nov 22 '17 at 0:19
new_DF<...