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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...quivalent to x = true. You can see how that might pose a problem. It only happens with booleans because no other datatype in Ruby has a falsy value.
– Amadan
Jun 10 '13 at 0:42
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Eclipse java debugging: source not found
While debugging a java app in eclipse I receive a " Source not found " error in two cases:
31 Answers
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How to add a Timeout to Console.ReadLine()?
I have a console app in which I want to give the user x seconds to respond to the prompt. If no input is made after a certain period of time, program logic should continue. We assume a timeout means empty response.
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Is there a JavaScript function that can pad a string to get to a determined length?
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Easily the most readable and concise approach I've found; simple enough that I generally wouldn't even bother with the prototype extension (at least for only a few uses in an app). Well done.
– brichins
May 7 '13 at 23:54
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What is the difference between ManualResetEvent and AutoResetEvent in .NET?
...ted, much more comprehensive, and easy to understand, run-to-learn console app snippet below.
Just run the examples on two different consoles, and observe behaviour. You will get much more clear idea there what is happening behind the scenes.
Manual Reset Event
using System;
using System.Threadin...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
... have this error before. But when I wanted to connect to my db thru an iOS app by using ssh tunnel, I got this 2013 error. To solve it I had to edit /etc/my.cnf and commented #bind-address = 127.0.0.1 Reference 1 Reference 2. Then I could connect. After this, I realized I was getting now this 2002 ...
Hibernate, @SequenceGenerator and allocationSize
...ly is to add something like this to your hibernate options: serviceBuilder.applySetting("hibernate.id.optimizer.pooled.preferred", LegacyHiLoAlgorithmOptimizer.class.getName()); Instead of the LegacyHiLoAlgorithOptimizer you can pick any optimizer class, and it will become default. This should make ...
Using success/error/finally/catch with Promises in AngularJS
...obj); // -> {name: 'Igor', address: 'San Francisco'}
});
};
What happened?
Because success and error return the original promise, i.e. the one returned by $http.get, the object passed to the callback of the then is the whole user object, that is to say the same input to the preceding succe...
How do I prevent Eclipse from hanging on startup?
... freezes after I started using its generic web connector), but the problem appeared even after uninstalling the connector, and even deleting the .mylyn directories.
Edit: I also managed to restart eclipse by deleting just one file:
rm $WORKSPACE_DIR/.metadata/.plugins/org.eclipse.e4.workbench/work...
What exactly can cause an “HIERARCHY_REQUEST_ERR: DOM Exception 3”-Error?
...ns internally, but what exactly is it trying to do whenever such a problem appears?
15 Answers
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