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Mediator Vs Observer Object-Oriented Design Patterns
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The Observer pattern:
Defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.
The Mediator pattern:
Define an object that encapsulates how a set of objects interact...
Wait one second in running program
İ want to wait one second before printing my grid cells with this code, but it isn't working. What can i do?
10 Answers
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What can you use Python generator functions for?
... return a list, but instead of returning them all at once they return them one-by-one, and the generator function is paused until the next item is requested.
Generators are good for calculating large sets of results (in particular calculations involving loops themselves) where you don't know if you...
How to fetch all Git branches
I cloned a Git repository, which contains about five branches. However, when I do git branch I only see one of them:
31 A...
Most underused data visualization [closed]
...m "Looking at Data" earlier this year. Beyond that I would just highlight one visualization from R, and two graphics packages (which are not as widely used as base graphics, lattice, or ggplot):
Heat Maps
I really like visualizations that can handle multivariate data, especially time series data....
rsync copy over only certain types of files using include option
... still retain the directory structure" +1
– Juuso Ohtonen
Nov 22 '17 at 11:41
1
I don't understan...
Given a view, how do I get its viewController?
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I'm not sure if it would break MVC principles. At any one point, a view has only one view controller. Being able to get to it in order to pass a message back to it, should be an automatic feature, not one where you have to work to achieve (by adding a property to keep track). ...
How to read the output from git diff?
...se). The --git is to mean that diff is in the "git" diff format.
Next are one or more extended header lines. The first threesimilarity index 95%
rename from builtin-http-fetch.c
rename to http-fetch.ctell us that the file was renamed from builtin-http-fetch.c to http-fetch.c and that those two fil...
How to replace multiple white spaces with one white space
...'y';
string bigString = new string(chars);
// Assume that one form works :)
string normalized = NormalizeWithSplitAndJoin(bigString);
var suite = new TestSuite<string, string>("Normalize")
.Plus(NormalizeWithSplitAndJoin)
.Plus(Normali...
Programmer Puzzle: Encoding a chess board state throughout a game
...ion of pieces on the board. Encoding simply the positions of the pieces is one thing but the problem says “all subsequent legal moves”. The problem also says nothing about knowing the moves up to this point. That’s actually a problem as I’ll explain.
Castling
The game has proceeded as foll...