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Ruby class instance variable vs. class variable
I read " When do Ruby instance variables get set? " but I'm of two minds when to use class instance variables.
7 Answers
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JPA EntityManager: Why use persist() over merge()?
... will add an entity to a PersistenceContext, the difference is in what you do with the entity afterwards.
Persist takes an entity instance, adds it to the context and makes that instance managed (ie future updates to the entity will be tracked).
Merge returns the managed instance that the state w...
What is the fundamental difference between WebSockets and pure TCP?
...gotiate to use the web sockets protocol (assuming the server is capable of doing so) to allow a more "TCP socket"-like communication stream.
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Random float number generation
How do I generate random floats in C++?
14 Answers
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Focus Input Box On Load
...this might not be supported in all browsers, so we can use javascript.
window.onload = function() {
var input = document.getElementById("myinputbox").focus();
}
2) How to place cursor at the end of the input text?
Here's a non-jQuery solution with some borrowed code from another SO answer.
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Disabled UIButton not faded or grey
... up months ago and now I'm back here with the same problem, I wish I could do it again!
– Benjohn
Jul 6 '15 at 15:12
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Pushing an existing Git repository to SVN
I've been doing all my work in Git and pushing to GitHub. I've been very happy with both the software and the site, and I have no wish to change my working practices at this point.
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VS2012 return to a normal TFS checkin window?
VS2012 seems to remove the popup window for TFS check-ins that was in VS2010. It now seems to take over the team explorer tab in my sidebar, and buries the important things - like which files I've changed. Is there any way to return to a normal popup window for check-ins in VS2012?
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Error in Swift class: Property not initialized at super.init call
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@MDJ Sure thing. I honestly don't see the added value of it either.
– Ruben
Jun 3 '14 at 18:48
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How to get the last date of a particular month with JodaTime?
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How about:
LocalDate endOfMonth = date.dayOfMonth().withMaximumValue();
dayOfMonth() returns a LocalDate.Property which represents the "day of month" field in a way which knows the originating LocalDate.
As it happens, the withMaximumValue() metho...