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How to check if a number is a power of 2
Today I needed a simple algorithm for checking if a number is a power of 2.
25 Answers
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Jackson databind enum case insensitive
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In version 2.4.0 you can register a custom serializer for all the Enum types (link to the github issue). Also you can replace the standard Enum deserializer on your own that will be aware about the Enum type. Here is an example:
public...
Sort a Custom Class List
.../ add some stuff to the list
// now sort
week.Sort(delegate(cTag c1, cTag c2) { return c1.date.CompareTo(c2.date); });
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What does the Ellipsis object do?
...is is an object that can appear in slice notation. For example:
myList[1:2, ..., 0]
Its interpretation is purely up to whatever implements the __getitem__ function and sees Ellipsis objects there, but its main (and intended) use is in the numpy third-party library, which adds a multidimensional ...
Symfony 2: How do I check if a user is not logged in inside a template?
In Symfony 2 templates (using Twig), how can I effectively check whether a user is not logged in?
2 Answers
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Linux command or script counting duplicated lines in a text file?
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219
Send it through sort (to put adjacent items together) then uniq -c to give counts, i.e.:
sort...
How to use JavaScript variables in jQuery selectors?
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var name = this.name;
$("input[name=" + name + "]").hide();
OR you can do something like thi...
Remove trailing newline from the elements of a string list
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>>> my_list = ['this\n', 'is\n', 'a\n', 'list\n', 'of\n', 'words\n']
>>> map...
Difference between Apache CXF and Axis
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Keep in mind, I'm completely biased (PMC Chair of CXF), but my thoughts:
From a strictly "can...
Java: Static Class?
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edited Aug 9 '14 at 23:44
Maarten Bodewes
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