<%= f.datetime_select :start_time %>
@options[:discard_second] ||= true unless @options[:include_seconds] && !@options[:discard_minute]
<%= f.datetime_select :start_time, :include_seconds => true %>
suppose we need to create a copyright statement which shows current year dynamically.
in the language text file (en.yml), we expect a variable current_year:
in the layout view, we provide this current_year as hash:
I was sharing architecture of a RU05 program and performance tuning we did on with Mongo.
Codeaholics Feb Meetup
The slides i showed was actually a web page moving like a powerpoint slides.
The source code to generate the slides is available in github.
here I draft out high level steps giving you some rough ideas of the work required to create such webpage. you can find all the detail steps in jekyll, jekyll_and_hyde and rack-jekyll github page.
install required gems and create project:
gem install jekyll
gem install jekyll_and_hyde
gem install rack-jekyll
jh new codeaholics_hk_feb_2011
cd codeaholics_hk_feb_2011
To prepare deployment for the future, generate the static pages into another folder instead of default _site directory. i used "pages" folder in my case:
in the .gems file, include rack-jekyll
follow the github pages to setup _config.yml and config.ru
You can start creating your powerpoint, and read it at localhost:4000
jekyll --server pages
jh generate frontpage
... // generate your static pages
... // keep your jekyll server running until you finish. i explain why below
When you want to deploy to heroku:
git init
git add .
git commit -m ""
heroku create codeaholics_hk_feb_2011
git push heroku master
One issue i saw when generating post was that. I edited my posts markdown files after I stopped the jekyll server, and later when i started it again, no more static pages generated automatically. I guess the service could no longer recognizes which files was edited. I could not resolve this problem. So, i have to create another project and copy over my markdown files to continue.
I have been using Prawn for a while. Here I gather several overflow / page break examples.
Having several lines of text and I want whole block of text stick together
Solution is using group to hold them together
Sometime there is no enough space for the last table row when it reaches the end of page, and Prawn does not move it to next page. That's why we have to manually add a page break:
More code snippets available at https://gist.github.com/3dd13
On the Web server, the .NET Framework maintains a pool of threads that are used to service ASP.NET requests. When a request arrives, a thread from the pool is dispatched to process that request. If the request is processed synchronously, the thread that processes the request is blocked while the request is being processed, and that thread cannot service another request.
This might not be a problem, because the thread pool can be made large enough to accommodate many blocked threads. However, the number of threads in the thread pool is limited. In large applications that process multiple simultaneous long-running requests, all available threads might be blocked. This condition is known as thread starvation. When this condition is reached, the Web server queues requests. If the request queue becomes full, the Web server rejects requests with an HTTP 503 status (Server Too Busy).
heroku config:set TZ=Asia/Hong_KongEveryday you go into dozen of different working directories for work, keep typing cd xxx/xxx/xxx/ just slow you down. Use symbolic links to gather shortcuts.
ln -s [target_directory] [name_of_the_link]For example:
ln -s ~/projects/ru05/playground/menu_web ~/menu_webthen everytime you want to go somewhere, just execute
cd ~/menu_webone shot, no pain
it's cool
I was working in a company which only gave development team a tiny harddisk space for UAT, and there were many applications deployed by different teams. Obviously, not everyone cares about housekeeping their own shit. So I frequently had to check the disk space ...
many people knows about du -sk to check spaced used, but I also want to sort the result. here comes the long command:
du -skc * | sort -rnTo keep my hands and finger healthy, I created alias to type less:
alias dusk='du -skc * | sort -rn'Better save some time doing other meaningful stuff instead of repeatedly typing mundane commands.
My team is working in flexible hours and sometimes distributed in different locations (Home, Coffee Shop, Travelling). Many projects running in parallel which are charging by man hour. So recently, we are trying different ways of tracking our time spent on each project in a simple and less restrictive way. LessTimeSpent fits our purpose.
http://lesstimespent.com
It is simple. just start or stop the timer. then it will start accumulate your time towards the project. Total time spent by the team is displayed. Add a simple note next to the timer, then you can tell others what you are planning to do now. So, after a period of time, you can see the high level picture of effort spent on the project.
The expense feature is not useful to us, but i think some ppl would love to use that for simple accounting.
Every time i sit down at some places start working, put down what i would like to do, click start button. It is kind of like "Stand Up" in agile practices. Oh Right, perhaps it is a good idea to review yesterday's stand up too.