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Converting Dictionary to List? [duplicate]
...ust specify it between square brackets as shown above. And we could have done dictlist.append([key,value]) if we wanted to be as brief as possible.
Or just use dict.items() as has been suggested.
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How can I reliably get an object's address when operator& is overloaded?
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Update: in C++11, one may use std::addressof instead of boost::addressof.
Let us first copy the code from Boost, minus the compiler work around bits:
template<class T>
struct addr_impl_ref
{
T & v_;
inline addr_impl_ref( T &...
Is MVC a Design Pattern or Architectural pattern
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Why does one of them have to be true?
Both can be true, depending on point of view.
MVC can be an architectual pattern, if it forms the basis of the application architecture.
It can also be seen as simply a design pattern, an abst...
How to move child element from one parent to another using jQuery [duplicate]
... this is the best solution, because the detach()+append() won't clone the element but will move that to the new location. The events and the assocciated data won't get lost this way
– Denes Papp
Jan 17 '13 at 6:20
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Create a “with” block on several context managers? [duplicate]
...se, but if you have an unknown-length list of context managers you'll need one of the below methods.
In Python 3.3, you can enter an unknown-length list of context managers by using contextlib.ExitStack:
with ExitStack() as stack:
for mgr in ctx_managers:
stack.enter_context(mgr)
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Cosine Similarity between 2 Number Lists
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Just a reminder that Passing one dimension arrays as input data is deprecated in sklearn version 0.17, and will raise ValueError in 0.19.
– Chong Tang
Mar 11 '16 at 14:36
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Why .NET String is immutable? [duplicate]
...formance win in the case in question). With mutable objects that can't be done.
No side-effects can come from passing an immutable type as a method to a parameter unless it is out or ref (since that changes the reference, not the object). A programmer therefore knows that if string x = "abc" at the ...
Difference between if () { } and if () : endif;
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They are the same but the second one is great if you have MVC in your code and don't want to have a lot of echos in your code. For example, in my .phtml files (Zend Framework) I will write something like this:
<?php if($this->value): ?>
Hello
<?...
The transaction log for the database is full
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Is this a one time script, or regularly occurring job?
In the past, for special projects that temporarily require lots of space for the log file, I created a second log file and made it huge. Once the project is complete we then remo...
How to convert a data frame column to numeric type?
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Here goes: first two columns are character. I've deliberately called 2nd one fake_char. Spot the similarity of this character variable with one that Dirk created in his reply. It's actually a numerical vector converted to character. 3rd and 4th column are factor, and the last one is "purely" numer...