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What is the purpose of “!” and “?” at the end of method names?
...ments, exit! etc.) by convention end with exclamation marks.
From: http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/, Section Funny method names
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Ruby: How to post a file via HTTP as multipart/form-data?
...om the README:
require 'net/http/post/multipart'
url = URI.parse('http://www.example.com/upload')
File.open("./image.jpg") do |jpg|
req = Net::HTTP::Post::Multipart.new url.path,
"file" => UploadIO.new(jpg, "image/jpeg", "image.jpg")
res = Net::HTTP.start(url.host, url.port) do |http|
...
CSS customized scroll bar in div
...
Similarly, WebKit now has its own version:
Styling scrollbars: https://www.webkit.org/blog/363/styling-scrollbars/
Demo of all WebKit scroll bar styling
From Custom scrollbars in WebKit, relevant CSS:
/* pseudo elements */
::-webkit-scrollbar { }
::-webkit-scrollbar-button {...
What does !important mean in CSS?
...ace for the rules still having a finger in the pie.
References:
http://www.w3.org/TR/CSS2/cascade.html#cascade
https://russmaxdesign.github.io/maxdesign-slides/02-css/207-css-cascade.html
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ElasticSearch - Return Unique Values
...t body = {
"size": 0, // Returning only aggregation results: https://www.elastic.co/guide/en/elasticsearch/reference/current/returning-only-agg-results.html
"aggs" : {
"langs": {
"composite" : {
"size": ITEMS_PER_PAGE,
"sources" : [
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How to check for valid email address? [duplicate]
...s a valid email address.
I've had some luck with the lepl package (http://www.acooke.org/lepl/). It can validate email addresses as indicated in RFC 3696: http://www.faqs.org/rfcs/rfc3696.html
Found some old code:
import lepl.apps.rfc3696
email_validator = lepl.apps.rfc3696.Email()
if not email_...
How do you plot bar charts in gnuplot?
...mend Derek Bruening's bar graph generator Perl script. Available at http://www.burningcutlery.com/derek/bargraph/
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Read a zipped file as a pandas DataFrame
...
https://www.kaggle.com/jboysen/quick-gz-pandas-tutorial
Please follow this link.
import pandas as pd
traffic_station_df = pd.read_csv('C:\\Folders\\Jupiter_Feed.txt.gz', compression='gzip',
header=1, ...
nginx missing sites-available directory
...tep 3). Be sure to give it the right permissions/ownership. Likely root or www-data.
Move or copy your separate config files (just like you have in /etc/nginx/sites-available) into the directory conf.d.
Reload or restart nginx.
Eat an ice cream cone.
Any .conf files that you put into the conf.d d...
How to upgrade Eclipse for Java EE Developers?
... "on Mac Os X", however it should work for other systems as well):
http://www.corephp.com/blog/how-to-upgrade-eclipse-juno-4-2-to-eclipse-kepler-4-3-on-mac-os-x/#.UfJsoI1_McY
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