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When would you use a WeakHashMap or a WeakReference?
The use of weak references is something that I've never seen an implementation of so I'm trying to figure out what the use case for them is and how the implementation would work. When have you needed to use a WeakHashMap or WeakReference and how was it used?
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The SQL OVER() clause - when and why is it useful?
...t does the function Over do? What does Partitioning By do?
Why can't I make a query with writing Group By SalesOrderID ?
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Difference between attr_accessor and attr_accessible
..., what is the difference between attr_accessor and attr_accessible ? From my understanding, using attr_accessor is used to create getter and setter methods for that variable, so that we can access the variable like Object.variable or Object.variable = some_value .
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Can I use my existing git repo with openshift?
...e bitbucket / github git repo and would prefer to push there only. Can I simply hook into it so that openshift gets intimation ?
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How to fix corrupted git repository?
I tried cloning my repository which I keep on my Ubuntu one folder to a new machine and I got this:
14 Answers
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Expand/collapse section in UITableView in iOS
Could somebody tell me the way to perform UITableView expandable/collapsible animations in sections of UITableView as below?
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Flex-box: Align last row to grid
I have a simple flex-box layout with a container like:
27 Answers
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Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
Note: This question was originally asked here but the bounty time expired even though an acceptable answer was not actually found. I am re-asking this question including all details provided in the original question.
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Google maps API V3 - multiple markers on exact same spot
Bit stuck on this one. I am retrieving a list of geo coords via JSON and popping them onto a google map. All is working well except in the instance when I have two or more markers on the exact same spot. The API only displays 1 marker - the top one. This is fair enough I suppose but would like t...
LISTAGG in Oracle to return distinct values
I am trying to use the LISTAGG function in Oracle. I would like to get only the distinct values for that column. Is there a way in which I can get only the distinct values without creating a function or a procedure?
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