Linux: copy files and folders and sub folders in linux
cp -a <source> <destination>
Linux: Create symbolic links
ln -s <physical file/folder path> <symbolic link path>
[Javascript]: Simple way to create random strings in Javascript
Math.random().toString(36).substring(2)
[PostgreSQL] Take backup of the individual table in postgres
pg_dump -t <table-name> <database-name> > /tmp/file_name.dump
[Ruby On Rails] Get the variable type in ruby on rails
is_a()
addr = Array.new
addr.is_a?Array #returns true
addr = Array.new
addr.is_a?Array #returns true
[Ruby on Rails] Get the last date of the month in ruby on rails
dd = 11 # which means tha month november
dd_end_txt = `date -d "#{mm}/1 + 1 month - 1day"`
# which returns "Sat Nov 30 00:00:00 IST 2013\n"
dummy = dd_end_txt.split(" ")
dd_end = dummy[2] if(dummy != nil)
# Result is 30
dd_end_txt = `date -d "#{mm}/1 + 1 month - 1day"`
# which returns "Sat Nov 30 00:00:00 IST 2013\n"
dummy = dd_end_txt.split(" ")
dd_end = dummy[2] if(dummy != nil)
# Result is 30
[Ruby on Rails]: remove empty array elements in ruby on rails
Method 1
arr = ["1","2",""]
arr.delete("")
Method 2
arr.reject! { |e| e.empty? }
arr = ["1","2",""]
arr.delete("")
Method 2
arr.reject! { |e| e.empty? }
Subscribe to:
Comments (Atom)
Popular Posts
- RUBY: Lower case and upper case conversion in ruby on rails
- PHP: Get full web page URL from address bar in php
- Implode string with ruby array values using join()
- [Ruby On Rails] Get the variable type in ruby on rails
- [Ruby on Rails]: remove empty array elements in ruby on rails
- Ruby On Rails - Getting Started
- Add two Time values in php
- RUBY: Ruby on Rails - string replace