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How to evaluate a math expression given in string form?
... Expression exp = parse("x^2 - x + 2", variables);
for (double x = -20; x <= +20; x++) {
variables.put("x", x);
System.out.println(x + " => " + exp.eval());
}
}
Different datatypes:
Instead of double, you could change the evaluator to use something more powerful li...
How do I ALTER a PostgreSQL table and make a column unique?
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edited Oct 20 '14 at 17:12
rdrey
8,06633 gold badges3232 silver badges4848 bronze badges
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Why return NotImplemented instead of raising NotImplementedError
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edited Jun 15 '17 at 20:24
answered Jun 15 '17 at 19:55
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Using Mockito to mock classes with generic parameters
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20
I think this is fully acceptable since we are talking about a mock object in a unit test.
– Magnilex
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git add only modified changes and ignore untracked files
...y work in bash.
– Krøllebølle
Aug 20 '14 at 16:46
8
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how to append a list object to another
...O(1)?
– Chris Redford
Mar 12 '13 at 20:46
2
I guess splice should be O(1) for the case above.
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How to base64 encode image in linux bash / shell
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answered Oct 1 '15 at 20:02
Eduardo CuomoEduardo Cuomo
12.7k22 gold badges8686 silver badges7676 bronze badges
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jQuery remove all list items from an unordered list
...l-li-from-ul
– Eido95
Feb 17 '16 at 20:34
add a comment
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Which timestamp type should I choose in a PostgreSQL database?
...CT NOW();
now
-------------------------------
2011-05-27 15:47:58.138995-07
(1 row)
test=> SELECT NOW() AT TIME ZONE 'UTC';
timezone
----------------------------
2011-05-27 22:48:02.235541
(1 row)
Note that AT TIME ZONE 'UTC' strips time zone i...
How can I use getSystemService in a non-activity class (LocationManager)?
....getContext().
– ToolmakerSteve
Sep 20 '15 at 16:22
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