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arrayfun can be significantly slower than an explicit loop in matlab. Why?
... t = 1:T
Soln4(t, :) = 3*x(t, :).^2 + 2*x(t, :) - 1;
end
toc
Soln4 0.053926 seconds.
Another factor 5 speedup: there is something in those statements saying you should avoid loops in MATLAB... Or is there really? Have a look at this then
tic
Soln5 = ones(T, N);
for n = 1:N
Soln5(:, n) =...
Is Ruby pass by reference or by value?
@user object adds errors to the lang_errors variable in the update_lanugages method.
when I perform a save on the @user object I lose the errors that were initially stored in the lang_errors variable.
...
How do I delete a Git branch locally and remotely?
... is not merge with master and ran 'git branch -d your_branch then you will error like error: The branch 'your_branch' is not fully merged. If you are sure you want to delete it, run 'git branch -D your_branch'.
– geeks
Oct 31 '15 at 12:59
...
How to tell whether a point is to the right or left side of a line
...
+1 nice, with one thing to be aware of: rounding error can be a concern when the point is very nearly on the line. Not a problem for most uses, but it does bite people from time to time.
– Stephen Canon
Oct 13 '09 at 14:18
...
ValidateAntiForgeryToken purpose, explanation and example
...then the same value is written to the form. When the page is submitted, an error is raised if the cookie value doesn't match the form value.
It's important to note that the feature prevents cross site request forgeries. That is, a form from another site that posts to your site in an attempt to subm...
Declare a const array
...you've shown is not a constant expression in C#, so it produces a compiler error.
Declaring it readonly solves that problem because the value is not initialized until run-time (although it's guaranteed to have initialized before the first time that the array is used).
Depending on what it is that ...
Xcode 6 beta 2 issue exporting .ipa: “Your account already has a valid iOS distribution certificate”
... an enterprise distribution package for my client
Xcode throws at me vague error: Your account already has a valid iOS distribution certificate
The solution is: get a private key for enterprise account of my client. There are 2 possible options:
Ask you client for credentials to access his enter...
How do I declare a global variable in VBA?
... ''different procedure without generating an
End Sub ''error (only possible confusion).
You can check out this MSDN reference for more on variable declaration and this other Stack Overflow Question for more on how variables go out of scope.
Two other quick things:
Be organi...
How to redirect 'print' output to a file using python?
...orm sys.stdout.close() , if you type anything in python shell it will show error as ValueError: I/O operation on closed file. imgur.com/a/xby9P. Best way to handle this is follow what @Gringo Suave posted
– Mourya
Dec 15 '16 at 10:46
...
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
... the
NumPy developers refused to guess and instead decided to raise a ValueError
whenever one tries to evaluate an array in boolean context. Applying and to
two numpy arrays causes the two arrays to be evaluated in boolean context (by
calling __bool__ in Python3 or __nonzero__ in Python2).
Your ori...