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error: passing xxx as 'this' argument of xxx discards qualifiers
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The objects in the std::set are stored as const StudentT. So when you try to call getId() with the const object the compiler detects a problem, mainly you're calling a non-const member function on const object which is not allowed because non-const member fu...
Inline code highlighting in reStructuredText
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Having looked into this some more I stumbled upon the document reStructuredText Interpreted Text Roles. From this document:
Interpreted text uses backquotes (`) around the text. An explicit role marker may optionally appear before or after the text, deli...
twitter bootstrap navbar fixed top overlapping site
...ss you add padding to the top of the <body>. Try out your own values or use our snippet below. Tip: By default, the navbar is 50px high.
body { padding-top: 70px; }
Make sure to include this after the core Bootstrap CSS.
and in the Bootstrap 4 docs...
Fixed navbars use position: fixed, mean...
How to define custom configuration variables in rails
...ariables to a rails application and how to access them in the controller, for e.g I wanna be able to define an upload_directory in the configuration files say development.rb and be able to access it in one of my controllers.
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Why is using 'eval' a bad practice?
I am using the following class to easily store data of my songs.
8 Answers
8
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...the evaluation of an expression, the result is not mathematically defined or not in the range of
representable values for its type, the behavior is undefined. [ Note: most existing implementations of C++
ignore integer overflows. Treatment of division by zero, forming a remainder using a zero...
How to tell which colorscheme a Vim session currently uses
You can set the Vim color scheme by issuing
3 Answers
3
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When and how should I use a ThreadLocal variable?
... avoid synchronizing access to that object (I'm looking at you, SimpleDateFormat). Instead, give each thread its own instance of the object.
For example:
public class Foo
{
// SimpleDateFormat is not thread-safe, so give one to each thread
private static final ThreadLocal<SimpleDateFor...
How do I exit from the text window in Git?
I am using Windows and before committing, Git wants me to enter a text message and a new text window appears.
7 Answers
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