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pandas dataframe columns scaling with sklearn
...]
df_norm = (df - df.min()) / (df.max() - df.min())
print df_norm
print pd.concat((df_norm, dfTest.C),1)
A B
0 0.000000 0.000000
1 0.926219 0.363636
2 0.935335 0.628645
3 1.000000 0.961407
4 0.938495 1.000000
A B C
0 0.000000 0.000000 big
1 0...
Operator overloading in Java
...ing is the handling of + for strings, which either results in compile-time concatenation of constants or execution-time concatenation using StringBuilder/StringBuffer. You can't define your own operators which act in the same way though.
For a Java-like (and JVM-based) language which does support o...
Replace words in the body text
...nextSibling){
if (node.nodeType==3) all.push(node);
else all = all.concat(textNodesUnder(node));
}
return all;
}
textNodes=textNodesUnder(document.body)
for (i in textNodes) { textNodes[i].nodeValue = textNodes[i].nodeValue.replace(/hello/g, 'hi');
`and followingly I applied the r...
Dynamic Sorting within SQL Stored Procedures
...ORDER BY
mySort
This one is easy to beat into submission -- you can concat fields in your mySort column, reverse the order with math or date functions, etc.
Preferably though, I use my asp.net gridviews or other objects with build-in sorting to do the sorting for me AFTER retrieving the data...
how to draw smooth curve through N points using javascript HTML5 canvas?
... for (var i = 0; i < pts.length - 2; i += 1) {
cps = cps.concat(ctlpts(pts[2*i], pts[2*i+1],
pts[2*i+2], pts[2*i+3],
pts[2*i+4], pts[2*i+5]));
}
if ($("showControlLines").check...
Validation failed for one or more entities while saving changes to SQL Server Database using Entity
... exception message with the new one.
var exceptionMessage = string.Concat(ex.Message, " The validation errors are: ", fullErrorMessage);
return exceptionMessage;
}
public static IEnumerable<Exception> GetInners(Exception ex)
{
for (Exception e = ex; e != nu...
How to list the contents of a package using YUM?
...s a sample command to dump the contents
echo 'SELECT packages.name, GROUP_CONCAT(files.name, ", ") AS files FROM files JOIN packages ON (files.pkgKey = packages.pkgKey) GROUP BY packages.name LIMIT 10;' | sqlite3 -line /var/cache/yum/x86_64/7/base/gen/primary_db.sqlite
: remove "LIMIT 10" above f...
How do I check to see if a value is an integer in MySQL?
...his query will give the rows with Int values
SELECT col1 FROM table WHERE concat('',col * 1) = col;
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Get all directories within directory nodejs
...e('path');
function flatten(lists) {
return lists.reduce((a, b) => a.concat(b), []);
}
function getDirectories(srcpath) {
return fs.readdirSync(srcpath)
.map(file => path.join(srcpath, file))
.filter(path => fs.statSync(path).isDirectory());
}
function getDirectoriesRecursive...
Path.Combine for URLs?
...railing slash round for quite a while all for the sake of not doing string concat.
– Carl
Jan 12 '11 at 16:10
66
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