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what is difference between success and .done() method of $.ajax
...function from the ajax function so later you can add your own handlers without modifying the original code (observer pattern).
Please find more detailed information from here: https://stackoverflow.com/a/14754681/1049184
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Heroku Postgres - terminate hung query (idle in transaction)
...ssume the pid is 1234 below.
You may cancel a query through SQL (i.e. without shell access) as long as it's yours or you have super user access:
select pg_cancel_backend(1234);
That's a "friendly" request to cancel the 1234-query, and with some luck it will disappear after a while. Eventually, ...
Sort Go map values by keys
... k := range keys {
fmt.Println("Key:", k, "Value:", m[k])
}
}
Output:
Key: 0 Value: b
Key: 1 Value: a
Key: 2 Value: c
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How can I swap positions of two open files (in splits) in vim?
Assume I've got some arbitrary layout of splits in vim.
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List comprehension on a nested list?
... ...: for e in d
...: for f in e]
Out[3]: [1.0]
For your case, it will be something like this.
In [4]: new_list = [float(y) for x in l for y in x]
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ASP.Net: Literal vs Label
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Yep, the main difference is that Literal controls just render out text, but Label controls surround it with <span> tags (Unless you use the AssociatedControlID property, in which case a Label control will render a <label> tag).
So, labels can be styled easier, but if you're...
How do I upload a file with metadata using a REST web service?
...hen use this ContentUrl and do a PUT with the file data.
The nice thing about this approach is when your server starts get weighed down with immense volumes of data, the url that you return can just point to some other server with more space/capacity. Or you could implement some kind of round robi...
External template in Underscore
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EDIT: This answer is old and outdated. I'd delete it, but it is the "accepted" answer. I'll inject my opinion instead.
I wouldn't advocate doing this anymore. Instead, I would separate all templates into individual HTML files. Some would suggest load...
Prefer composition over inheritance?
...he fly behavior of an Airplane. In this case, it makes sense to extract it out as an interface / class / both and make it a member of both classes.
Update: Just came back to my answer and it seems now that it is incomplete without a specific mention of Barbara Liskov's Liskov Substitution Princip...
When to use valueChangeListener or f:ajax listener?
... HTML DOM change event, then you'd need to add another <f:ajax/> without a listener(!) to the input component. It will cause a form submit which processes only the current component (as in execute="@this").
<h:selectOneMenu value="#{bean.value}" valueChangeListener="#{bean.changeListener}"...