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What is the difference between shallow copy, deepcopy and normal assignment operation?
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In python, when we assign objects like list, tuples, dict, etc to another object usually with a ' = ' sign, python creates copy’s by reference. That is, let’s say we have a list of list like this :
list1 = [ [ 'a' , 'b' , 'c' ] , [ 'd' , 'e' , 'f' ] ]
and we assign another li...
What is the difference between MVC and MVVM? [closed]
...l only make sense when using WPF's two way data binding. Otherwise MVC/MVP etc would be sufficient.
– Jeff
Sep 20 '10 at 23:42
268
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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...hics (color conversion, computational geometry, animation easing/blending, etc.) often times normalized numbers are used. That is, numbers between 0.0 and 1.0.
It is important to know the edge cases if the endpoints are inclusive or exclusive:
(0,1) = 1e-M .. 0.999...
(0,1] = 1e-M .. 1.0
[0,1) = ...
C++11 rvalues and move semantics confusion (return statement)
...move overloads for nearly anything (hash key and values, vector insertion, etc), and is where you will see them the most.
You can also use them to normal functions, and if you only provide an rvalue reference argument you can force the caller to create the object and let the function do the move. ...
Is JavaScript guaranteed to be single-threaded?
...etInterval, HTTP-request onload events (XHR), and UI events (click, focus, etc.) provide a crude impression of multi-threadedness - they are still all executed along a single timeline - one at a time - so even if we don't know their execution order beforehand, there's no need to worry about external...
Generic type parameter naming convention for Java (with multiple chars)?
...he Java Collections Framework)
K - Key
N - Number
T - Type
V - Value
S,U,V etc. - 2nd, 3rd, 4th types
You'll see these names used throughout the Java SE API and the rest of this lesson.
I'd stick to it to avoid the confusion among the developers and possible maintainers.
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HEAD and ORIG_HEAD in Git
...e to operate on --- resetting and growing the branch tip via commit/rebase/etc.).
Reflog is a vehicle to go back in time and time machines have interesting interaction with the notion of "current".
HEAD@{5.minutes.ago} could mean "dereference HEAD symref to find out what branch we are on R...
Understanding checked vs unchecked exceptions in Java
... I dont have any code for that stuff, I just cooked up the names etc. If you see java.lang.Exception, it has 4 constructors two of them accept java.lang.Throwable. In snippets above I assumed LoginFailureException extends Exception and declares a constructor public LoginFailureException(Th...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...will be lost. I.e. if t2 and t3 throws exception, only t2 will be catched; etc. The subsequent tasks exceptions will go unobserved.
Where as in the WhenAll - if any or all of the tasks fault, the resulting task will contain all of the exceptions. The await keyword still always re-throws the first ...
In Visual Studio C++, what are the memory allocation representations?
...00001 0xDDDDDDDD 0xFEEEFEEE Type (0=Freed, 1=Normal, 2=CRT use, etc)
0x00320FF8 -8 0xBAADF00D 0x00000031 0xDDDDDDDD 0xFEEEFEEE Request #, increases from 0
0x00320FFC -4 0xBAADF00D 0xFDFDFDFD 0xDDDDDDDD 0xFEEEFEEE No mans land
0x00321000 +0 0xBAAD...