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MVC pattern on Android
... your own MVC on any platform. As long as you stick to the following basic idea, you are implementing MVC:
Model: What to render
View: How to render
Controller: Events, user input
Also think about it this way: When you program your model, the model should not need to worry about the rendering (o...
Abusing the algebra of algebraic data types - why does this work?
... automatically and my less-than-subtle choice of names should give you the idea. The (&&&) operator is defined in Control.Arrow, by the way.
The dual of the above is the coproduct A+B with injections inl : A → A+B and inr : B → A+B, where given any type C and functions f : A → C, g...
IntelliJ: Working on multiple projects
... With 2017 version it's different, refer to jetbrains.com/help/idea/2017.1/maven-projects-tool-window.html
– vikramvi
May 29 '17 at 9:58
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Differences between Octave and MATLAB? [closed]
...to MATLAB's.
This attitude makes Octave lose its purpose completely. The idea behind Octave is (or has become, I should say, see comments below) to have an open source alternative to run m-code. If it tries to be "better", it thus tries to be different, which is not in line with the reasons most p...
Bogus foreign key constraint fail
...ET FOREIGN_KEY_CHECKS=0 and it does fix the error message. Do you have any idea about why this is required? Are foreign keys cached even after the tables are gone?
– Álvaro González
Jul 26 '10 at 12:16
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How do you rename a Git tag?
...er to "How can I do it?". The user wasn't asking if you think it is a good idea to do that or if people will like that. If someone asks "How can I cut off my hand", either tell him how it's done or leave him alone but he won't need someone telling him that cutting of a hand may not be such a great i...
Convert a string to an enum in C#
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can you add a code sample around this, so we get an idea on how to replace and use
– transformer
Jan 5 '18 at 7:32
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Explicitly select items from a list or tuple
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While this works it's usually not a good idea to directly invoke magic variables. You're better off using a list comprehension or a helper module like operator.
– jathanism
Jul 9 '11 at 2:08
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How to delete duplicate lines in a file without sorting it in Unix?
...n3\n3\n4\n4\n4\n4\n5' |sed -nr '$!N;/^(.*)\n\1$/!P;D'
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the core idea is:
print ONLY once of each duplicate consecutive lines at its LAST appearance and use D command to implement LOOP.
Explains:
$!N;: if current line is NOT the last line, use N command to read the next line into patt...
Split value from one field to two
...e a valid use. But I reiterate, doing it in the query is not really a good idea.
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