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What is the memory consumption of an object in Java?
...emporary Objects on the stack.
It may optimize some variables or method calls totally out of existence replacing them with constants.
It might version methods or loops, i.e. compile two versions of a method, each optimized for a certain situation, then decide up front which one to call.
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How do I convert a pandas Series or index to a Numpy array? [duplicate]
...].values
Out[3]: Out[16]: array([1, 2, 3])
To get the index as a list, call tolist:
In [4]: df.index.tolist()
Out[4]: ['a', 'b', 'c']
And similarly, for columns.
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Why am I not getting a java.util.ConcurrentModificationException in this example?
...reach the next() method only if hasNext() delivered true, which is what is called by the for each to check if the boundary is met. In your remove method, when hasNext() checks if it needs to return another element, it will see that it returned two elements, and now after one element was removed the ...
Meaning of “[: too many arguments” error from if [] (square brackets)
...:
# if [ hello world == 0 ]
fi
The same will be true for any function call that puts down a string containing spaces or other special characters.
Easy fix
Wrap the variable output in double quotes, forcing it to stay as one string (therefore one argument). For example,
VARIABLE=$(/some/com...
Should I test private methods or only public ones? [closed]
...ause I always thought it's faster to test only public methods that will be called from outside the object. Do you test private methods? Should I always test them?
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Are static methods inherited in Java?
... determined in the runtime by the JVM related to which object has made the call :)
– mounaim
Apr 16 '14 at 8:49
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How to properly compare two Integers in Java?
...n overload on equals in the Integer class, so it should be as efficient as calling .intValue(). It compares the values as primitive int.
– otterslide
Sep 22 '16 at 17:44
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How can I post data as form data instead of a request payload?
In the code below, the AngularJS $http method calls the URL, and submits the xsrf object as a "Request Payload" (as described in the Chrome debugger network tab). The jQuery $.ajax method does the same call, but submits xsrf as "Form Data".
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How to shut down the computer from C#
...ws
ExitWindowsEx(EWX_SHUTDOWN, 0);
}
// Structures needed for the API calls
private struct LUID
{
public int LowPart;
public int HighPart;
}
private struct LUID_AND_ATTRIBUTES
{
public LUID pLuid;
public int Attributes;
}
private struct TOKEN_PRIVILEGES
{
public int Privileg...
Stack, Static, and Heap in C++
...mary of what static, heap, and stack memory are:
A static variable is basically a global variable, even if you cannot access it globally. Usually there is an address for it that is in the executable itself. There is only one copy for the entire program. No matter how many times you go into a functi...