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What does the @ symbol before a variable name mean in C#? [duplicate]
...ng literal to change how the compiler parses the string. But what does it mean when a variable name is prefixed with the @ symbol?
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Folder structure for a Node.js project
...ture but had to do a lot directory moving later on, because the folder was meant for a different purpose than that I have read on internet, that is, what a particular folder does has different meanings for different people on some folders.
Now, having done multiple projects, in addition to explanat...
What is this crazy C++11 syntax ==> struct : bar {} foo {};?
What could this possibly mean in C++11?
2 Answers
2
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error: ‘NULL’ was not declared in this scope
...ther answers: If you are using C++11, use nullptr, which is a keyword that means a void pointer pointing to null. (instead of NULL, which is not a pointer type)
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Case preserving substitute in Vim
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Meaning since gVim 7.2? I tried it in gVim 7.1 (12-May-2007) and it din't work :(
– fc.
Apr 24 '09 at 17:43
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How do I find a “gap” in running counter with SQL?
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In MySQL and PostgreSQL:
SELECT id + 1
FROM mytable mo
WHERE NOT EXISTS
(
SELECT NULL
FROM mytable mi
WHERE mi.id = mo.id + 1
)
ORDER BY
id
LIMIT 1
In SQL Server:
SELECT TOP 1
id + 1
FR...
Iterating over each line of ls -l output
... Beware when piping to while, the while will run in a subshell, which means it could not change variables in the main process
– Reorx
Jan 14 '16 at 3:42
1
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Get ffmpeg information in friendly way
...e reason the "-progress -" isn't mentioned in the docs is because "-" just means pipe it to stdout
– Chris W
Jul 22 at 4:05
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C++, What does the colon after a constructor mean? [duplicate]
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It means that len is not set using the default constructor. while the demo class is being constructed. For instance:
class Demo{
int foo;
public:
Demo(){ foo = 1;}
};
Would first place a value in foo before setting i...
What does O(log n) mean exactly?
...times and amortized times. I understand the notion of O(n) linear time, meaning that the size of the input affects the growth of the algorithm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that...