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Java Hashmap: How to get key from value?
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The BidiMap interface in the Collections library is a bi-directional map, allowing you to map a key to a value (like normal maps), and also to map a value to a key, thus allowing you to perform lookups in both directions. Obtaining a key for a value is supported by the getKey() method.
There is a ...
Why is an MD5 hash created by Python different from one created using echo and md5sum in the shell?
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echo appends a \n since you usually do not want lines not ending with a linebreak in your shell (it looks really ugly if the prompt does not start at the very left).
Use the -n argument to omit the trailing linebreak and it will print the same checksum as ...
MongoDB vs. Cassandra [closed]
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Totally different, a comment isn't big enough, but ... Cassandra is a linearly scalable (amortized constant time reads & writes) dynamo/google bigtable hybrid that features fast writes regardless of data size. It's feature s...
MySQL show status - active or total connections?
...W STATUS WHERE `variable_name` = 'Threads_connected';
This will show you all the open connections.
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td widths, not working?
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inline css is a bad idea unless you really only need it in one place. also, td width has been depreciated for some time. see answer below
– kristina childs
Jun 18 '12 at 20:46
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How to add 10 days to current time in Rails
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Generally, it's best to use Time.zone.now in place of Time.now.
– x-yuri
Aug 8 '18 at 20:44
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How to pass an object into a state using UI-router?
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Actually for passing objects this is quite a nice hack :)
– Tek
Nov 1 '14 at 19:25
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What is AssemblyInfo.cs used for?
...-exposed, you don't need this. It is randomly
generate. In any case, normally, you don't need to modify it.
Credits goes to : http://social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/8955449f-71ac-448e-9ee6-5329fceecd3c
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Boolean.hashCode()
...ite objects it's common to add the hash codes for the components. If too small values are used in a hash set with a large number of buckets there's a risk of ending up with an uneven distribution of objects.
Do collisions matter? Booleans just have two different values anyway?
Maps can contain bool...
Is it possible to have empty RequestParam values use the defaultValue?
... the @RequestParam type to an Integer and make it not required. This would allow your request to succeed, but it would then be null. You could explicitly set it to your default value in the controller method:
@RequestMapping(value = "/test", method = RequestMethod.POST)
@ResponseBody
public void te...