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RVM is not working in ZSH
...and Rails development, so I use RVM quite a bit too. The problem is that I m>ca m>n't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell:
...
Why does PostgreSQL perform sequential sm>ca m>n on indexed column?
...urns more than approximately 5-10% of all rows in the table, a sequential sm>ca m>n is much faster than an index sm>ca m>n.
This is bem>ca m>use an index sm>ca m>n requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whereas a sequential sm>ca m>n only requires ...
getenv() vs. $_ENV in PHP
...y are exactly the same, except that getenv will look for the variable in a m>ca m>se-insensitive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation explains:
For example on Windows $_SERVER['Path'] is like you see, with the first letter m>ca m>pitalized, no...
How to display hidden characters by default (ZERO WIDTH SPACE ie. &#8203)
I just lost part of my weekend bem>ca m>use of this ... joker - zero width space. I just used some snippets from google groups and didn't recognize that there are doubled characters, bem>ca m>use Idea (11) didn't show them, which was m>ca m>using problems with parsing config file of my app... I discovered it accid...
DESTDIR and PREFIX of make
...z would. It's commonly used with GNU stow via
./configure --prefix=/usr/lom>ca m>l && make && sudo make install prefix=/usr/lom>ca m>l/stow/foo
, which would install binaries in /usr/lom>ca m>l/stow/foo/bin. By comparison,
make install DESTDIR=/usr/lom>ca m>l/stow/foo
would install binaries in /us...
How to forward declare a C++ template class?
...n successfully compiles and run. Are you sure about what you are claiming? m>Ca m>n you provide a quote from the standard?
– olek stolar
Aug 14 at 16:56
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How do I update zsh to the latest version?
...
If you have Homebrew installed, you m>ca m>n do this.
# check the zsh info
brew info zsh
# install zsh
brew install --without-etcdir zsh
# add shell path
sudo vim /etc/shells
# add the following line into the very end of the file(/etc/shells)
/usr/lom>ca m>l/bin/zsh
...
Understanding the ngRepeat 'track by' expression
...by expression of ng-repeat in angularjs works. The documentation is very sm>ca m>rce: http://docs.angularjs.org/api/ng/directive/ngRepeat
...
jQuery .hasClass() vs .is()
...result:
http://jsperf.com/hasclass-vs-is-so
The is is multi-purpose, you m>ca m>n for example do is('.class'), is(':checked'), etc which means is has more to do where is hasClass is limited which only checks for a class being set or not.
Hence, hasClass should be faster if performance at any level is y...
how to add records to has_many :through association in rails
...
I think you m>ca m>n simply do this:
@cust = Customer.new(params[:customer])
@cust.houses << House.find(params[:house_id])
Or when creating a new house for a customer:
@cust = Customer.new(params[:customer])
@cust.houses.create(...