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Map enum in JPA with fixed values?
...m using JPA. I especially want to set the integer value of each enum entry and to save only the integer value.
9 Answers
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Transaction isolation levels relation with locks on table
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I want to understand the lock each transaction isolation takes on the table
For example, you have 3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT st...
What online brokers offer APIs? [closed]
So I'm getting really sick of E*TRADE and, being a developer, would love to find an online broker that offers an API. It would be great to be able to write my own trading tools, and maybe even modify existing ones.
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Remove header and footer from window.print()
I am using window.print() for printing page, but I got header and footer contains page title, file path, page number and date. How to remove them?
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What are the differences between numpy arrays and matrices? Which one should I use?
What are the advantages and disadvantages of each?
5 Answers
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Why is ArrayDeque better than LinkedList
I am trying to to understand why Java's ArrayDeque is better than Java's LinkedList as they both implement Deque interface.
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Android 4.3 Bluetooth Low Energy unstable
...sting on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that device or any other device again.
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How can I use external JARs in an Android project?
I have created an Android project and added an external JAR (hessian-4.0.1.jar) to my project. I then added the JAR to the build path and checked it off in Order and Export.
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Which one is the best PDF-API for PHP? [closed]
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personally i'd rather go with tcpdf which is an ehnanced and mantained version of fpdf.
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Playing .mp3 and .wav in Java?
How can I play an .mp3 and a .wav file in my Java application? I am using Swing. I tried looking on the internet, for something like this example:
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