All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
GitHub supports several lightweight markup languages for documentation; the most popular ones (generally, not just at GitHub) are Markdown and reStructuredText. Markdown is sometimes considered easier to use, and is often preferred when the purpose is simply to generate HTML. On the other hand, reStructuredText is more extensible and powerful, with native support (not just embedded HTML) for tables, as well as things like automatic generation of tables of contents.
When hosting our web applications, we often have one public IP
address (i.e., an IP address visible to the outside world)
using which we want to host multiple web apps. For example, one
may wants to host three different web apps respectively for
example1.com, example2.com, and example1.com/images on
the same machine using a single IP address.
How can we do that? Well, the good news is Internet browsers
| resolver 8.8.8.8; | |
| location /video/ { | |
| if ($request_uri ~ "^/video/(.+?)/.+") { | |
| set $upstream_host $1.googlevideo.com; | |
| add_header Content-Disposition "attachment; filename=video.mp4;"; | |
| } | |
| rewrite /video/.+?/(.+)$ /$1 break; | |
| proxy_buffering off; | |
| proxy_pass https://$upstream_host; | |
| proxy_set_header Host $upstream_host; |
| #!/bin/sh | |
| # Setup encrypted disk image | |
| # For Ubuntu 14.04 LTS | |
| CRYPTFS_ROOT=/cryptfs | |
| apt-get update | |
| apt-get -y upgrade | |
| apt-get -y install cryptsetup |
| #! /usr/bin/python | |
| import sys | |
| import ldap | |
| from ldap.controls import SimplePagedResultsControl | |
| from distutils.version import LooseVersion | |
| # Check if we're using the Python "ldap" 2.4 or greater API | |
| LDAP24API = LooseVersion(ldap.__version__) >= LooseVersion('2.4') |
| # | |
| # UPDATE for 10.10.4+: please consider this patch obsolete, as apple provides a tool called "trimforce" to enable trim support for 3rd party SSDs | |
| # just run "sudo trimforce enable" to activate the trim support from now on! | |
| # | |
| # Original version by Grant Parnell is offline (http://digitaldj.net/2011/07/21/trim-enabler-for-lion/) | |
| # Update July 2014: no longer offline, see https://digitaldj.net/blog/2011/11/17/trim-enabler-for-os-x-lion-mountain-lion-mavericks/ | |
| # | |
| # Looks for "Apple" string in HD kext, changes it to a wildcard match for anything | |
| # | |
| # Alternative to http://www.groths.org/trim-enabler-3-0-released/ |
| #! /usr/bin/python | |
| """ | |
| This simple script makes it easy to create server certificates | |
| that are signed by your own Certificate Authority. | |
| Mostly, this script just automates the workflow explained | |
| in http://www.tc.umn.edu/~brams006/selfsign.html. | |
| Before using this script, you'll need to create a private |
| ''' | |
| Run the following commands (bc. gists don't allow directories) | |
| pip install flask django dj-database-url psycopg2 | |
| mkdir -p app/migrations | |
| touch app/__init__.py app/migrations/__init__.py | |
| mv models.py app/ | |
| python manage.py makemigrations | |
| python manage.py migrate |
| # Create your superuser | |
| $ mongo | |
| > use admin | |
| > db.createUser({user:"someadmin",pwd:"secret", roles:[{role:"root",db:"admin"}]}) | |
| > exit | |
| # Alias for convenience (optional and at your own risk) | |
| $ echo 'alias mongo="mongo --port 27017 -u someadmin -p secret --authenticationDatabase admin"' >> ~/.bash_profile | |
| $ source ~/.bash_profile |
