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How do I change an HTML selected option using JavaScript?
... So I can't do something like .value = id1, id2 or .value = [array] ?
– utdev
Mar 17 '17 at 11:50
@utdev...
How in node to split string by newline ('\n')?
...itLines("III\n\r\nJJJ\r\r\nKKK\r\n\nLLL\r\n\rMMM");
You should get these arrays as a result:
[ "AAA", "BBB", "CCC", "DDD" ]
[ "EEE", "", "FFF", "", "GGG", "", "HHH" ]
[ "III", "", "JJJ", "", "KKK", "", "LLL", "", "MMM" ]
You can also teach that regex to recognize other legit Unicode line termin...
Converting strings to floats in a DataFrame
... a b
0 0.1 0.2
1 NaN 0.3
2 0.4 0.5
In [13]: df.a.values
Out[13]: array(['0.1', nan, '0.4'], dtype=object)
In [14]: df.a = df.a.astype(float).fillna(0.0)
In [15]: df
Out[15]:
a b
0 0.1 0.2
1 0.0 0.3
2 0.4 0.5
In [16]: df.a.values
Out[16]: array([ 0.1, 0. , 0.4])
...
How to include() all PHP files from a directory?
...g classes that are extending a base class: eg if BaseClass shows up in the array AFTER ExtendedClass, it wont work!
– Carmageddon
May 13 '13 at 16:12
2
...
Get the Last Inserted Id Using Laravel Eloquent
...gt;save();
$data->id;
Can be used like this.
return Response::json(array('success' => true, 'last_insert_id' => $data->id), 200);
For updated laravel version try this
return response()->json(array('success' => true, 'last_insert_id' => $data->id), 200);
...
Principal component analysis in Python
...al Component Analysis
Usage:
p = PCA( A, fraction=0.90 )
In:
A: an array of e.g. 1000 observations x 20 variables, 1000 rows x 20 columns
fraction: use principal components that account for e.g.
90 % of the total variance
Out:
p.U, p.d, p.Vt: from numpy.linalg.svd, A = U . d...
Inline labels in Matplotlib
...s[l].get_label())
pos = np.argmax(p) # note, argmax flattens the array first
best_x, best_y = (pos / N, pos % N)
x = xmin + (xmax-xmin) * best_x / N
y = ymin + (ymax-ymin) * best_y / N
axis.text(x, y, axis.lines[l].get_label(),
...
How to sort an IEnumerable
... actual type that implements, you probably shouldn't be modifying it. Btw, Array.FunctorComparer<T> is internal.
– dtb
Sep 2 '10 at 20:56
...
What are JavaScript's builtin strings?
.... 1/!1+[] gives "Infinity".
I have analyzed different build-in methods for arrays [], objects {}, regular expressions /(?:)/, numbers 1.1, strings "1", and discovered one beautiful method of RegExp object called test(). Its name can be assembled from all available characters, e.g. "t" and "e" from t...
How to know which version of Symfony I have?
...ion extends \Twig_Extension
{
public function getFunctions()
{
return array(
//this is the name of the function you will use in twig
new \Twig_SimpleFunction('symfony_version', array($this, 'b'))
);
}
public function getName()
{
//return 'number_employees';
return 'symfony_version_exten...