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What are the special dollar sign shell variables?
...r to be several variables which hold special, consistently-meaning values. For instance,
4 Answers
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Can we write our own iterator in Java?
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good answer.... +1 However you're not forced to subclass LinkedList. You can write a CustomIterator that it's instantiated with new CustomIterator(somelist), since interfaces tell nothing about constructors.
– gd1
May 1 '11 ...
What does the `#` operator mean in Scala?
...t understand that, look up path dependent types.
Now, # makes it possible for you to refer to such nested classes without restricting it to a particular instance. In other words, there's no A.B, but there's A#B, which means a B nested class of any instance of A.
We can see this in work by changing...
Why does Math.Floor(Double) return a value of type Double?
I need to get the left hand side integer value from a decimal or double. For Ex: I need to get the value 4 from 4.6. I tried using Math.Floor function but it's returning a double value, for ex: It's returning 4.0 from 4.6. The MSDN documentation says that it returns an integer value. Am I missing so...
Any equivalent to .= for adding to beginning of string in PHP?
Just wondering if there is something like .= for adding text to the beginning of a string, e.g.:
5 Answers
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Difference between DirectCast() and CType() in VB.NET
...has just gotten into VB.NET. I generally use CType (and CInt, CBool, CStr) for casts because it is fewer characters and was the first way of casting which I was exposed to, but I am aware of DirectCast and TryCast as well.
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
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I updated my test according to answer, and for some reason, despite the suggested function IS faster, it's actually not very significant: 264 ms original, 258ms suggested one
– Petr
Apr 19 '13 at 9:58
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In Intellij, how do I toggle between camel case and underscore spaced?
At my company we have two different style guides for java vs sql. In java I have a field named historyOfPresentIllness and when i write the sql, I want to name it history_of_present_illness . Is there a keyboard shortcut to switch from one to the other when I have the phrase highlighted? Or pe...
How to check whether a file or directory exists?
... @OlivierAmblet There is no exception happening here. Go uses panic for an actual "exception" like object. You can "catch" with a call to recover. Explicitly returning an err as a second return value is an extremely common, idiomatic Go technique. See: golang.org/doc/effective_go.html#erro...
How to get result of console.trace() as string in javascript with chrome or firefox?
...t the results as string and save them to a file.
I don't define names for functions and I also can not get their names with callee.caller.name .
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