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What is the difference between “INNER JOIN” and “OUTER JOIN”?
...ables, with a single column each, and data as follows:
A B
- -
1 3
2 4
3 5
4 6
Note that (1,2) are unique to A, (3,4) are common, and (5,6) are unique to B.
Inner join
An inner join using either of the equivalent queries gives the intersection of the two tables, i.e. the two r...
Loop through an array in JavaScript
...e seen this anti-pattern so many times.
Anti-pattern:
const numbers = [1,2,3,4,5], doubled = [];
numbers.forEach((n, i) => { doubled[i] = n * 2 });
Proper use case of map:
const numbers = [1,2,3,4,5];
const doubled = numbers.map(n => n * 2);
console.log(doubled);
Also, if you are ...
How do I pass command line arguments to a Node.js program?
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How to base64 encode image in linux bash / shell
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answered Jun 4 '13 at 13:09
chepnerchepner
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Json.net serialize/deserialize derived types?
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edited Oct 2 '18 at 3:03
answered Jan 6 '12 at 20:02
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Calculate date/time difference in java [duplicate]
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edited Nov 9 '18 at 13:52
vels4j
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answered M...
Grep for literal strings
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138
You can use grep for that, with the -F option.
-F, --fixed-strings PATTERN is a set of n...
How to view the Folder and Files in GAC?
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137
Install:
gacutil -i "path_to_the_assembly"
View:
Open in Windows Explorer folder
.NET...
Rollback to last git commit
...O local file changes and REMOVE your last commit
git reset --hard HEAD^
3) KEEP local file changes and REMOVE your last commit
git reset --soft HEAD^
share
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Scala 2.8 breakOut
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325
The answer is found on the definition of map:
def map[B, That](f : (A) => B)(implicit bf :...