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Why is a C++ Vector called a Vector?
...Mathematical definition of a vector is a member of the set Sn, which is an ordered sequence of values in a specific set (S). This is what a C++ vector stores.
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Explain Morris inorder tree traversal without using stacks or recursion
Can someone please help me understand the following Morris inorder tree traversal algorithm without using stacks or recursion ? I was trying to understand how it works, but its just escaping me.
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Postgres and Indexes on Foreign Keys and Primary Keys
...n ('pg_catalog', 'pg_toast')
and pg_catalog.pg_table_is_visible(c.oid)
order by
n.nspname
,t.relname
,c.relname
If you want to delve further (such as columns and ordering), you need to look at pg_catalog.pg_index. Using psql -E [dbname] comes in handy for figuring out how to query...
How do I deserialize a JSON string into an NSDictionary? (For iOS 5+)
...version:) can be used in conjunction with JSONDecoder's decode(_:from:) in order to deserialize a JSON string into a dictionary.
Furthermore, with Swift 3 and Swift 4, String's data(using:allowLossyConversion:) can also be used in conjunction with JSONSerialization's jsonObject(with:options:...
Drop unused factor levels in a subsetted data frame
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Also: this method does preserve the ordering of the variable.
– webelo
Jul 1 '16 at 0:36
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ORA-00979 not a group by expression
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No, you do not need to put them in your order by clause
– Xaisoft
Oct 5 '09 at 15:10
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how to check the dtype of a column in python pandas
...y of the question is specific. So any other answers may be used.
But in order to fully answer the title question it should be clarified that it seems like all of the approaches may fail in some cases and require some rework. I reviewed all of them (and some additional) in decreasing of reliabilit...
“Public key certificate and private key doesn't match” when using Godaddy issued certificate [closed
...was to 1) convert the private key like you suggest here and 2) reverse the order of the certificates in the certificate chain provided by RapidSSL. Thanks!
– MiniQuark
Jan 19 '14 at 23:36
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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
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If you have an Order class, adding a property that references another class in your model, for instance Customer should be enough to let EF know there's a relationship in there:
public class Order
{
public int ID { get; set; }
// ...
List files by last edited date
...t recently modified files, consider ls -lrt[RhA]. the -r reverses the sort order, leaving recently edited stuff at the bottom of the list...
– dmckee --- ex-moderator kitten
Sep 10 '09 at 12:59
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