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How to update a value, given a key in a hashmap?
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map.put(key, map.get(key) + 1);
should be fine. It will update the value for the existing mapping. Note that this uses auto-boxing. With the help of map.get(key) we get the value of corresponding key, then you can update with your requirement. Here I am updating to increm...
How do you manage databases in development, test, and production?
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edited Aug 12 '11 at 23:05
answered Aug 8 '08 at 21:01
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Private and Protected Members : C++
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Private members are only accessible within the class defining them.
Protected members are accessible in the class that defines them and in classes that inherit from that class.
Edit: Both are also accessible by friends of their class, and in the case of protec...
Creating a favicon [closed]
How can I create a favicon for my website?
10 Answers
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What is the facade design pattern?
...acade design pattern simplifies the interface to a complex system; because it is usually composed of all the classes which make up the subsystems of the complex system.
A Facade shields the user from the complex details of the system and provides them with a simplified view of it which is easy to ...
Checking if an object is a given type in Swift
I have an array that is made up of AnyObject . I want to iterate over it, and find all elements that are array instances.
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How to chain scope queries with OR instead of AND?
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You would do
Person.where('name=? OR lastname=?', 'John', 'Smith')
Right now, there isn't any other OR support by the new AR3 syntax (that is without using some 3rd party gem).
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Unloading classes in java?
...cted. This means, references to every single class and to the classloader itself need to go the way of the dodo.
One possible solution to your problem is to have a Classloader for every jar file, and a Classloader for each of the AppServers that delegates the actual loading of classes to specific ...
Python CSV error: line contains NULL byte
I'm working with some CSV files, with the following code:
16 Answers
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Difference between System.DateTime.Now and System.DateTime.Today
...sts of the local date and time of the computer where the code is running. It has DateTimeKind.Local assigned to its Kind property. It is equivalent to calling any of the following:
DateTime.UtcNow.ToLocalTime()
DateTimeOffset.UtcNow.LocalDateTime
DateTimeOffset.Now.LocalDateTime
TimeZoneInfo.Co...