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Do HTML WebSockets maintain an open connection for each client? Does this scale?
...bSockets will probably scale better than AJAX/HTML requests. However, that doesn't mean WebSockets is a replacement for all uses of AJAX/HTML.
Each TCP connection in itself consumes very little in terms server resources. Often setting up the connection can be expensive but maintaining an idle conne...
How can I grep for a string that begins with a dash/hyphen?
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Use:
grep -- -X
Related: What does a bare double dash mean? (thanks to nutty about natty).
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How to delete a property from Google Analytics
...from Google Analytics, but there is no delete option on the property page. Does anyone know how to delete a property from Google Analytics?
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How exactly does tail recursion work?
...rence between it and a normal recursion. I only don't understand why it doesn't require stack to remember its return address.
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How to use a variable to specify column name in ggplot
...()quotes the expression (not necessarily a symbol) fed to the argument, it doesn't convert a string literal to a symbol as ensym() does so it might be less adapted here, but we can do :
f3 <- function(column) {
column <- enquo(column)
ggplot(rates.by.groups,
aes(x = name,
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Why does CSS not support negative padding?
... on w3) - this would make the content area smaller than the content, which doesn't make sense.
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How does a Java HashMap handle different objects with the same hash code?
...it's going to look in the same bucket).
If two keys are different, then it doesn't matter if their hash codes are the same or not. They will be stored in the same bucket if their hash codes are the same, and in this case, the hashmap will use equals() to tell them apart.
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What does (angle brackets) mean in Java?
...> as value
<K> as key
But you can name it anything you want, it doesn't really matter.
Moreover, Integer, String, Boolean etc are wrapper classes of Java which help in checking of types during compilation. For example, in the above code, obj is of type String, so you can't add any other ...
How to call asynchronous method from synchronous method in C#?
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Asynchronous programming does "grow" through the code base. It has been compared to a zombie virus. The best solution is to allow it to grow, but sometimes that's not possible.
I have written a few types in my Nito.AsyncEx library for dealing with a ...
WPF: How to programmatically remove focus from a TextBox
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This does not always clear focus: I have a problem where an AutoCompleteTextBox inside a ListBox does not lose focus when I run Keyboard.ClearFocus() from code-behind after a click somewhere.
– ANeves thinks ...