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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
...l as this link.
As per the articles in the previous 2 links you need to fix your setters in both sides of the bidirectional relationship. An example setter for the One side is in this link.
An example setter for the Many side is in this link.
After you correct your setters you want to declare the...
Any gotchas using unicode_literals in Python 2.6?
...ain source of problems I've had working with unicode strings is when you mix utf-8 encoded strings with unicode ones.
For example, consider the following scripts.
two.py
# encoding: utf-8
name = 'helló wörld from two'
one.py
# encoding: utf-8
from __future__ import unicode_literals
import tw...
Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...in your serialPort1_DataReceived method is coming from another thread context than the UI thread, and that's the reason you see this error.
To remedy this, you will have to use a dispatcher as descibed in the MSDN article:
How to: Make Thread-Safe Calls to Windows Forms Controls
So instead of settin...
How do I set the offset for ScrollSpy in Bootstrap?
I have a site with the navbar fixed on top and 3 divs underneath in the main content area.
12 Answers
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How can I make the computer beep in C#?
How do I make the computer's internal speaker beep in C# without external speakers?
6 Answers
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Change IPython/Jupyter notebook working directory
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Architecture of a single-page JavaScript web application?
How should a complex single-page JS web application be structured on the client-side? Specifically I'm curious about how to cleanly structure the application in terms of its model objects, UI components, any controllers, and objects handling server persistence.
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R memory management / cannot allocate vector of size n Mb
I am running into issues trying to use large objects in R. For example:
8 Answers
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Simple (non-secure) hash function for JavaScript? [duplicate]
...passed a string as input, produces something similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have to be cryptographically secure, just reasonably resistant to collisions. (My initial use case is URLs, but I'll probably want to use it on other ...
How to retrieve Request Payload
I'm using PHP , ExtJS and ajax store .
2 Answers
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