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How to get all subsets of a set? (powerset)
..., ('a', 'c', 'd'), ('b', 'c', 'd'), ('a', 'b', 'c', 'd')]
If you don't like that empty tuple at the beginning, you can just change the range statement to range(1, len(s)+1) to avoid a 0-length combination.
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What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL?
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They take up different amounts of space and they have different ranges of acceptable values.
Here are the sizes and ranges of values for SQL Server, other RDBMSes have similar documentation:
MySQL
Postgres
Oracle (they just have ...
Why is my git repository so big?
145M = .git/objects/pack/
12 Answers
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Moment.js - how do I get the number of years since a date, not rounded up?
..."02/26/1978", "MM/DD/YYYY").fromNow() returns '35 years ago'. How can I make Moment.js ignore the number of months, and simply return the number of years (i.e. 34) since the date?
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jQuery - setting the selected value of a select control via its text description
...;/option>
</select>
Note that while this approach will work in versions that are above 1.6 but less than 1.9, it has been deprecated since 1.6. It will not work in jQuery 1.9+.
Previous versions
val() should handle both cases.
$('select').val('1'); // selects "Two"
$('sele...
Using str_replace so that it only acts on the first match?
...h in the $subject . Is there an easy solution to this, or do I need a hacky solution?
22 Answers
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RegEx backreferences in IntelliJ
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IntelliJ uses $1 for replacement backreferences.
From IntelliJ's help:
For more information on regular expressions and their syntax, refer to documentation for java.util.regex Back references should have $n, rather than \n format.
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Make maven's surefire show stacktrace in console
I'd like to see the stacktrace of unit tests in the console. Does surefire support this?
3 Answers
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How do you send a HEAD HTTP request in Python 2?
...can read the MIME type without having to download the content. Does anyone know of an easy way of doing this?
11 Answers
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What is the role of the bias in neural networks? [closed]
I'm aware of the gradient descent and the back-propagation algorithm. What I don't get is: when is using a bias important and how do you use it?
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