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Iterator Loop vs index loop [duplicate]

I'm reviewing my knowledge on C++ and I've stumbled upon iterators. One thing I want to know is what makes them so special and I want to know why this: ...
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Does Python have an ordered set?

...s referred to from the Python 2 Documentation. This runs on Py2.6 or later and 3.0 or later without any modifications. The interface is almost exactly the same as a normal set, except that initialisation should be done with a list. OrderedSet([1, 2, 3]) This is a MutableSet, so the signature for ...
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Subversion stuck due to “previous operation has not finished”?

...orning from my home pc, but then I commit the same set of files from work, and now my home repo is bust). So, cleanup says: ...
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How can I add new keys to a dictionary?

...y by assigning a value to that key. If the key doesn't exist, it's added and points to that value. If it exists, the current value it points to is overwritten. —R. Navega share | improve th...
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Is short-circuiting logical operators mandated? And evaluation order?

Does the ANSI standard mandate the logical operators to be short-circuited, in either C or C++? 7 Answers ...
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How to use PHP OPCache?

PHP 5.5 has been released and it features a new code caching module called OPCache, but there doesn't appear to be any documentation for it. ...
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Position icons into circle

...can I position several <img> elements into a circle around another and have those elements all be clickable links as well? I want it to look like the picture below, but I have no idea how to achieve that effect. ...
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How to compare dates in datetime fields in Postgresql?

...3 12:20:00). This column has the value as timestamp for all rows currently and have the same date part(2013-05-03) but difference in time part. ...
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Find if current time falls in a time range

...ount the number of matches? For example I want to count how many saturdays and sundays are in the range. – pbies Sep 4 '13 at 19:28 ...
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Efficient way to insert a number into a sorted array of numbers?

I have a sorted JavaScript array, and want to insert one more item into the array such the resulting array remains sorted. I could certainly implement a simple quicksort-style insertion function: ...