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Principal component analysis in Python
...in__":
import sys
csv = "iris4.csv" # wikipedia Iris_flower_data_set
# 5.1,3.5,1.4,0.2 # ,Iris-setosa ...
N = 1000
K = 20
fraction = .90
seed = 1
exec "\n".join( sys.argv[1:] ) # N= ...
np.random.seed(seed)
np.set_printoptions( 1, threshold=100, suppre...
Reset all changes after last commit in git
...e to my directory after the last commit, including deleting added files, resetting modified files, and adding back deleted files?
...
The following untracked working tree files would be overwritten by merge, but I don't care
...de. As well as deleting the unwanted directory I also just deleted my user settings for the project :-(
– dumbledad
Dec 11 '15 at 7:35
7
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How to get the source directory of a Bash script from within the script itself?
How do I get the path of the directory in which a Bash script is located, inside that script?
67 Answers
...
Properly escape a double quote in CSV
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Create an empty data.frame
I'm trying to initialize a data.frame without any rows. Basically, I want to specify the data types for each column and name them, but not have any rows created as a result.
...
Android: Vertical ViewPager [closed]
... init();
}
public VerticalViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
// The majority of the magic happens here
setPageTransformer(true, new VerticalPageTransformer());
// The ea...
OR is not supported with CASE Statement in SQL Server
...pression2 THEN Result2
ELSE ResultN
END
This compares an expression to a set of simple expressions to find the result. This expression compares an expression to the expression in each WHEN clause for equivalency. If the expression within the WHEN clause is matched, the expression in the THEN claus...
Loop through all the files with a specific extension
...By default, a non-matching pattern is treated as a literal string. You can set nullglob to have it treated as an empty sequence, or set failglob to have it treated as an error. (If you set both, failglob takes precedence.)
– chepner
Jul 7 '17 at 17:31
...
How would you implement an LRU cache in Java?
Please don't say EHCache or OSCache, etc. Assume for purposes of this question that I want to implement my own using just the SDK (learning by doing). Given that the cache will be used in a multithreaded environment, which datastructures would you use? I've already implemented one using LinkedHashM...