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Is it better to use std::memcpy() or std::copy() in terms to performance?
... of its information. When you call std::copy, the function keeps the types intact. memcpy operates on void *, which discards almost all useful information. For instance, if I pass in an array of std::uint64_t, the compiler or library implementer may be able to take advantage of 64-bit alignment with...
C# DateTime to UTC Time without changing the time
How would I convert a preexisting datetime to UTC time without changing the actual time.
4 Answers
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Add Text on Image using PIL
...t, Which basically finds the character which will be last in each line and converts white space before this character to new-line.
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Getting activity from context in android
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This is something that I have used successfully to convert Context to Activity when operating within the UI in fragments or custom views. It will unpack ContextWrapper recursively or return null if it fails.
public Activity getActivity(Context context)
{
if (context == n...
How to use System.Net.HttpClient to post a complex type?
...uccessStatusCode();
});
Note: you need to make your id to a nullable int (int?)
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How do you echo a 4-digit Unicode character in Bash?
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Quick one-liner to convert UTF-8 characters into their 3-byte format:
var="$(echo -n '☠' | od -An -tx1)"; printf '\\x%s' ${var^^}; echo
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How to Vertical align elements in a div?
...er element zoomable/scrollable within the container, like canvas in powerpoint)? Is it possible at all?
– Boris Burkov
Nov 4 '15 at 5:18
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How does python numpy.where() work?
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How do they achieve internally that you are able to pass something like x > 5 into a method?
The short answer is that they don't.
Any sort of logical operation on a numpy array returns a boolean array. (i.e. __gt__, __lt__, etc all return ...
How much is the overhead of smart pointers compared to normal pointers in C++?
How much is the overhead of smart pointers compared to normal pointers in C++11? In other words, is my code going to be slower if I use smart pointers, and if so, how much slower?
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When are C++ macros beneficial? [closed]
... FILE generates a string constant, which will be concatenated with the ":" into a single string by the pre-processor.
– Frank Szczerba
Mar 19 '09 at 23:59
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