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Best algorithm for detecting cycles in a directed graph [closed]
... akuaku
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71
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Avoiding instanceof in Java
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20
As highlighted in the comments, the visitor pattern would be a good choice. But without direct ...
Difference between this and self in self-type annotations?
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Martin OderskyMartin Odersky
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Why use a prime number in hashCode?
... 0 1
12 4 5
16 0 2
20 4 6
24 0 3
28 4 0
Notice the almost-perfect distribution when using a prime modulus vs. a non-prime modulus.
However, although the above example is largely contri...
How to stop Visual Studio from opening a file on single click?
In my Visual Studio 2012 Solution Explorer, when I single click a filename it opens it. This was different from Visual Studio 2010 (required a double click). Is there a way to make double-click the 'view file' command?
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How can I change a secret Gist to public?
...e the gist to public, but I can't find how to set it publi
Since May, 9th 2014, it is possible: "Change the visibility of your Gists"
You can change the visibility of your Gists whenever you want.
When editing a Gist you'll now notice a new option to toggle the visibility between Public and Secret...
Recursive lambda functions in C++11
...ndirection. I first found this easy trick at http://pedromelendez.com/blog/2015/07/16/recursive-lambdas-in-c14/
It does require C++14 while the question is on C++11, but perhaps interesting to most.
Going via std::function is also possible but can result in slower code. But not always. Have a loo...
How to find the length of a string in R
...equire(stringi)
require(stringr)
x <- c(letters,NA,paste(sample(letters,2000,TRUE),collapse=" "))
microbenchmark(nchar(x),str_length(x),stri_length(x))
Unit: microseconds
expr min lq median uq max neval
nchar(x) 11.868 12.776 13.1590 13.6475 41.815 100
str_...
Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
...you may also print it on console using address pointer:
(lldb) po 0x17dce920
<UIView: 0x17dce920; frame = (10 30; 300 24.5); autoresize = RM+BM; layer = <CALayer: 0x17dce9b0>>
You can do the same for every constraint the debugger will point to you:-) Now you decide what to do with thi...
How to define two angular apps / modules in one page?
...e.
– Robert Christian
May 31 '13 at 20:37
Also, I really like the way using ng-app shows another developer exactly whi...