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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
...ur question.
Tom White has been an Apache Hadoop committer since February 2007, and is a member of the Apache Software Foundation, so I guess it is pretty credible and official...
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How to list the properties of a JavaScript object?
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In modern browsers (IE9+, FF4+, Chrome5+, Opera12+, Safari5+) you can use the built in Object.keys method:
var keys = Object.keys(myObject);
The above has a full polyfill but a simplified version is:
var getKeys = function(obj){
var keys = [];
for(var key in obj)...
String concatenation in MySQL
I am using MySQL and MySQL Workbench 5.2 CE. When I try to concatenate 2 columns, last_name and first_name , it doesn't work :
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How do I sort strings alphabetically while accounting for value when a string is numeric?
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/// <inheritdoc />
public int Compare(string s1, string s2)
{
const int S1GreaterThanS2 = 1;
const int S2GreaterThanS1 = -1;
var IsNumeric1 = IsNumeric(s1);
var IsNumeric2 = IsNumeric(s2);
if (IsNumeric1 && IsNumeric2)
{...
How do I make Git treat a file as binary?
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2 Answers
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How to test if parameters exist in rails
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edited Mar 7 '19 at 18:29
answered Apr 12 '11 at 1:41
mu...
How do you follow an HTTP Redirect in Node.js?
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edited Apr 24 '14 at 12:55
neo
74155 silver badges77 bronze badges
answered Sep 6 '11 at ...
What does template mean?
...al<0>
{
enum { value = 1 };
};
// Factorial<4>::value == 24
// Factorial<0>::value == 1
void foo()
{
int x = Factorial<4>::value; // == 24
int y = Factorial<0>::value; // == 1
}
s...
?: operator (the 'Elvis operator') in PHP
...se ?: 0); // 0
var_dump(null ?: 'foo'); // 'foo'
var_dump(true ?: 123); // true
var_dump('rock' ?: 'roll'); // 'rock'
?>
By the way, it's called the Elvis operator.
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npm windows install globally results in npm ERR! extraneous
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209
npm ERR! extraneous means a package is installed but is not listed in your project's package.j...