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Get selected value in dropdown list using JavaScript
...electItem.value}}</p>
// JavaScript
$scope.items = [{
value: 'item_1_id',
text: 'Item 1'
}, {
value: 'item_2_id',
text: 'Item 2'
}];
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Longest line in a file
...
awk '{print length, $0}' Input_file |sort -nr|head -1
For reference : Finding the longest line in a file
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How to set custom favicon in Express?
...ware and then do:
var favicon = require('serve-favicon');
app.use(favicon(__dirname + '/public/images/favicon.ico'));
Or better, using the path module:
app.use(favicon(path.join(__dirname,'public','images','favicon.ico')));
(note that this solution will work in express 3 apps as well)
In Express ...
MySQL Fire Trigger for both Insert and Update
...me.
1. Define the INSERT trigger:
DELIMITER //
DROP TRIGGER IF EXISTS my_insert_trigger//
CREATE DEFINER=root@localhost TRIGGER my_insert_trigger
AFTER INSERT ON `table`
FOR EACH ROW
BEGIN
-- Call the common procedure ran if there is an INSERT or UPDATE on `table`
-- NEW.id is an...
Should I use encodeURI or encodeURIComponent for encoding URLs?
...
Here is a summary.
escape() will not encode @ * _ + - . /
Do not use it.
encodeURI() will not encode A-Z a-z 0-9 ; , / ? : @ & = + $ - _ . ! ~ * ' ( ) #
Use it when your input is a complete URL like 'https://searchexample.com/search?q=wiki'
encodeURIComponent() will ...
How can I scale an image in a CSS sprite
...alt="" src="spacer.png">
<img class="sprite" alt="icon" src="sprite_800x160.jpg">
</a>
<a class="stretchy s2" href="#">
<img class="spacer" alt="" src="spacer.png">
<img class="sprite" alt="icon" src="sprite_800x160.jpg">
</a>
<a class="stretchy s3" hr...
Label encoding across multiple columns in scikit-learn
...
You can easily do this though,
df.apply(LabelEncoder().fit_transform)
EDIT2:
In scikit-learn 0.20, the recommended way is
OneHotEncoder().fit_transform(df)
as the OneHotEncoder now supports string input.
Applying OneHotEncoder only to certain columns is possible with the Colum...
How do I add the contents of an iterable to a set?
...rt Timer
a = set(range(1, 100000))
b = list(range(50000, 150000))
def one_by_one(s, l):
for i in l:
s.add(i)
def cast_to_list_and_back(s, l):
s = set(list(s) + l)
def update_set(s,l):
s.update(l)
results are:
one_by_one 10.184448844986036
cast_to_list_and_back 7.96925...
How do I find numeric columns in Pandas?
...
You could use select_dtypes method of DataFrame. It includes two parameters include and exclude. So isNumeric would look like:
numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']
newdf = df.select_dtypes(include=numerics)
...
Making a WinForms TextBox behave like your browser's address bar
...bing focus, etc.)
bool alreadyFocused;
...
textBox1.GotFocus += textBox1_GotFocus;
textBox1.MouseUp += textBox1_MouseUp;
textBox1.Leave += textBox1_Leave;
...
void textBox1_Leave(object sender, EventArgs e)
{
alreadyFocused = false;
}
void textBox1_GotFocus(object sender, EventArgs e)
{
...