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Choosing between std::map and std::unordered_map [duplicate]
Now that std has a real hash map in unordered_map , why (or when) would I still want to use the good old map over unordered_map on systems where it actually exists? Are there any obvious situations that I cannot immediately see?
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SELECT * WHERE NOT EXISTS
...ays forget how to exactly use it. Thanks - this example will be bookmarked now.
– Mateng
Sep 18 '12 at 9:00
1
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Inheritance and Overriding __init__ in python
...le dated with respect to subclassing built-in classes.
It looks like this nowadays:
class FileInfo(dict):
"""store file metadata"""
def __init__(self, filename=None):
super(FileInfo, self).__init__()
self["name"] = filename
Note the following:
We can directly subclass b...
std::auto_ptr to std::unique_ptr
...ou cannot do a global find/replace because you can copy an auto_ptr (with known consequences), but a unique_ptr can only be moved. Anything that looks like
std::auto_ptr<int> p(new int);
std::auto_ptr<int> p2 = p;
will have to become at least like this
std::unique_ptr<int> p(n...
How do SQL EXISTS statements work?
...M student WHERE EXISTS (SELECT 1 FROM student WHERE student.id > 1). I know what I wrote could be achieved by one simple WHERE query but I was just using it to understand EXISTS. I got all the rows. Is it indeed due to the fact that I didn't use correlated subquery? Thanks.
–...
What does “#pragma comment” mean?
... Microsoft started the "#pragma once" deal and it was only in MS products, now I'm not so sure.
Pragma Directives It includes "#pragma comment" in the table you'll see.
HTH
I suspect GCC, for example, has their own set of #pragma's.
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Attach IntelliJ IDEA debugger to a running Java process
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IntelliJ will connect to the JVM and initiate remote debugging.
You can now debug the application by adding breakpoints to your code where desired. The output of the application will still appear wherever it did before, but your breakpoints will hit in IntelliJ.
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Implement paging (skip / take) functionality with this query
...BER() OVER (ORDER BY MAX(Datemade) desc). And remove last ORDER BY PostId. Now the CTE should be sorted 'sooner' as needed. correct?
– Radim Köhler
Nov 4 '12 at 20:08
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unable to start mongodb local server
... 31945 0.0 0.0 2423368 184 s000 R+ 8:24pm 0:00.00 grep mongo
Now enter the kill command for the mongod instance (31936 in this case):
kill 31936
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How to generate Javadoc HTML files in Eclipse?
...le, the root directory of the current project).
Click Finish.
You should now be able to find the newly generated Javadoc in the destination folder.
Open index.html.
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