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How should one use std::optional?
...ry_parse_int(std::string s, int& i);
Another way that this could be done is especially bad:
int* try_parse_int(std::string s); //return nullptr if fail
This requires dynamic memory allocation, worrying about ownership, etc. - always prefer one of the other two signatures above.
Another e...
FFMPEG (libx264) “height not divisible by 2”
... pad rather than scale, to add a black row/column. Scaling an image up by one pixel will blur it.
– Glenn Maynard
Nov 14 '15 at 22:20
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Displaying build times in Visual Studio?
Our build server is taking too long to build one of our C++ projects. It uses Visual Studio 2008. Is there any way to get devenv.com to log the time taken to build each project in the solution, so that I know where to focus my efforts?
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Non-Relational Database Design [closed]
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Have you bridged the gap with any design patterns, e.g. to translate from one to the other?
I'm not sure that's feasible. It's more of a complete redesign, like translating a functional style program to an object-oriented style. In general, there are far fewer document types than there are SQL tab...
What's wrong with using $_REQUEST[]?
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If you accidentally get a cookie set on your site with the same name as one of your form parameters, then the forms that rely on that parameter will mysteriously stop working properly due to cookie values overriding the expected parameters. This is very easy to do if you have multiple apps on the...
Developing cross platform mobile application [closed]
...ey care how many platforms the app can run on when they they don't use but one platform. They just care if the app does what they need it to on the hardware they need to run it on. Unless they have a specific need to run the app on many different platforms, the fact that it does brings them no val...
How can I copy the content of a branch to a new local branch?
...his just creating the new branch but cannot able to copy the contents from one branch to another branch. When i try this commands it just showing "The branch named **** already exist".
– anoop
Sep 27 '13 at 14:45
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Should URL be case sensitive?
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W3 guideline is reasonable. It simply states that one shouldn't make an assumption on how the server handles the URL you are submitting. It is up to the server how to handle the request URL. Most of web servers are unix/linux and that means most of web servers are case sensi...
Using Default Arguments in a Function
...ith this method, passing a null value means you want the default value for one parameter when you want to override the default value for a parameter that comes after it.
As stated in other answers,
default parameters only work as the last arguments to the function.
If you want to declare th...
What is the HEAD in git?
...'s notation for "the commit before" - that's the commit before the current one. (If the current is a merge, it uses the first parent.)
– Cascabel
Mar 27 '10 at 16:41
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