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Java HashMap performance optimization / alternative
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@Oscar - more collisions equals more work to do, because now you have to do a linear search of the hash chain. If you have 26,000,000 distinct values per equals(), and 26,000 distinct values per hashCode(), then the bucket chains will have 1,000 objects each.
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How to configure MongoDB Java driver MongoOptions for production use?
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the "slaveOk" option is now deprecated, if you want the equivalent of this to be true, do: mongoOptions.readPreference = ReadPreference.secondaryPreferred();
– Gubatron
Oct 18 '12 at 2:45
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MySQL - ORDER BY values within IN()
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Careful. Any unknown property value (not in the list) will take precedence over the known values, i.e. FIELD(letter, 'A', 'C'), the list will first return entries with B letter first (assuming a set of records with A | B | C values). To avoi...
Why do this() and super() have to be the first statement in a constructor?
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Considering the compiler knows when you're accessing parent methods/fields I don't see why you can't be allowed something along the lines of Constructor(int x) { this.field1 = x; super(); }. Sure, you shouldn't need to in an ideal world where you cont...
Difference between DTO, VO, POJO, JavaBeans?
...inition of Data Transfer Object:
Data transfer object (DTO), formerly known as value objects or VO, is a design pattern used to transfer data between software application subsystems. DTOs are often used in conjunction with data access objects to retrieve data from a database.
The difference...
Setting global styles for Views in Android
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The most elegant solution I saw until now.
– Italo Borssatto
Sep 2 '11 at 17:42
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Difference between Rebuild and Clean + Build in Visual Studio
...ou execute Clean sln + Build sln, they will give a link error and let you know that immediately, instead of giving you an app with odd behavior.
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What is an uninterruptible process?
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@ddaa I do know Linux is not a microkernel, though I am not sure what part of my comment relates to it... And then, does your comment mean that a microkernel OS does not have a problem with those "uninterruptible" processes? Because if i...
How to make all Objects in AWS S3 bucket public by default?
...incipal": {
"AWS": [
"*"
]
}
}
]
}
Now go to your AWS S3 console, At the bucket level, click on Properties, Expand Permissions, then Select Add bucket policy. Paste the above generated code into the editor and hit save.
All your items in the bucket will be pu...
REST API 404: Bad URI, or Missing Resource?
...ans that something does exist there and that something is just empty right now (like an empty string in programming).
404 doesn't mean it was a "bad URI". There are special HTTP codes that are intended for URI errors (e.g. 414 Request-URI Too Long).
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