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“Unresolved inclusion” error with Eclipse CDT for C standard library headers
...in several sections for the compiler:
Adding include paths and symbols
C/C++ Project Properties, Paths and Symbols, Includes
And if the code-completion/indexer or preprocessor specifically also cannot locate stdio.h:
Setting up include paths and macros for C/C++ indexer
C/C++ Project propertie...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
Coming from other C-derived languages (like Java or C#) to C++, it is at first very confusing that C++ has three ways to refer to members of a class: a::b , a.b , and a->b . When do I use which one of these operators?
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Scroll to a div using jquery
...value where the scrollbar should scroll to.
Example:
$(window).scrollTop(200);
will scroll the window (if there is enough content in it).
So you can get this desired value with .offset() or .position().
Example:
$(window).scrollTop($('#contact').offset().top);
This should scroll the #conta...
Is there any use for unique_ptr with array?
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@Aidiakapi C++ requires that if you delete[] an array of objects which have destructors, the destructors get run. For that reason, the C++ run time already needs to know the actual size of most arrays that have been allocated that way. ...
Is #pragma once part of the C++11 standard?
...ally, the standard and portable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below).
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How do I create a random alpha-numeric string in C++?
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Please use C++11 or boost random, we're in 2016 now
– Nikko
Jan 29 '16 at 13:23
13
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How to count TRUE values in a logical vector
...sum(z). length(z[z==TRUE]) is about 10x slower and table(z)[TRUE] is about 200x slower than sum(z).
Summing up, sum(z) is the fastest to type and to execute.
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How to build for armv6 and armv7 architectures with iOS 5
...ew.center.x;
p.y=myView.center.y;
// now p=(160,100)
p.y+=100;
// now p =(200,200) (what the heck?)
Maybe I'm have some memory corruption, however, on the armv7 compiler and on iOSSDK < 5.0 it behaves as expected.
Best regards
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Is the pImpl idiom really used in practice?
I am reading the book "Exceptional C++" by Herb Sutter, and in that book I have learned about the pImpl idiom. Basically, the idea is to create a structure for the private objects of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementatio...
Linux command (like cat) to read a specified quantity of characters
...ytes. For example, to get the second 100 bytes from a file, read the first 200 with head and use tail to get the last 100:
head -c 200 file | tail -c 100
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