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What is The Rule of Three?
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1832
Introduction
C++ treats variables of user-defined types with value semantics.
This means that o...
Doing a cleanup action just before Node.js exits
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531
UPDATE:
You can register a handler for process.on('exit') and in any other case(SIGINT or unha...
.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
... (n) Mode Samples Score Error Units
c.a.p.SO29378922.preSize 1 avgt 30 0.025 ▒ 0.001 us/op
c.a.p.SO29378922.preSize 100 avgt 30 0.155 ▒ 0.004 us/op
c.a.p.SO29378922.preSize 1000 avgt 30 1.512 ▒ 0.031 us/op
c.a.p.S...
Get line number while using grep
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Dominykas Mostauskis
6,11322 gold badges3838 silver badges5555 bronze badges
answered Jul 9 '10 at 14:52
Miro A.Miro A.
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How can I get the max (or min) value in a vector?
...T (&a)[N]) { return a+N; }
int main()
{
const int cloud[] = { 1,2,3,4,-7,999,5,6 };
std::cout << *std::max_element(mybegin(cloud), myend(cloud)) << '\n';
std::cout << *std::min_element(mybegin(cloud), myend(cloud)) << '\n';
}
Oh, and use std::minmax_elemen...
Dynamically select data frame columns using $ and a character value
... a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. Sec...
Should I learn C before learning C++? [closed]
...directory to find it was done in C++ (most of the other projects were Java 3D apps).
14 Answers
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Getting the folder name from a path
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341
I would probably use something like:
string path = "C:/folder1/folder2/file.txt";
string last...
How can I make the computer beep in C#?
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edited Jan 8 '15 at 13:15
Er. ßridy
49311 gold badge66 silver badges2020 bronze badges
answered No...
Delete everything in a MongoDB database
...2
Rimian
31.1k1010 gold badges102102 silver badges107107 bronze badges
answered Jul 29 '10 at 19:53
Josh KJosh...