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What is the difference between const_iterator and non-const iterator in the C++ STL?
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answered Nov 21 '08 at 17:39
Dominic RodgerDominic Rodger
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Input from the keyboard in command line application
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Ezekiel ElinEzekiel Elin
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
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What is the “right” way to iterate through an array in Ruby?
...with_index {|val, index| puts "#{val} => #{index}" }
Prints:
A => 0
B => 1
C => 2
I'm not quite sure from your question which one you are looking for.
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Is there a function to make a copy of a PHP array to another?
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$a = array();
$b = $a;
$b['foo'] = 42;
var_dump($a);
Will yield:
array(0) {
}
Whereas:
$a = new StdClass();
$b = $a;
$b->foo = 42;
var_dump($a);
Yields:
object(stdClass)#1 (1) {
["foo"]=>
int(42)
}
You could get confused by intricacies such as ArrayObject, which is an object th...
Summarizing multiple columns with dplyr? [duplicate]
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The dplyr package contains summarise_all for this aim:
library(dplyr)
df %>% group_by(grp) %&...
Find kth smallest element in a binary search tree in Optimum way
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answered Feb 24 '10 at 20:27
IVladIVlad
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How to vertically align text inside a flexbox?
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Slowing speed of Viewpager controller in android
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