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What does 'require: false' in Gemfile mean?
...
In order to require gems in your Gemfile, you will need to call Bundler.require.
You can prevent bundler from requiring the gem with require: false, but it will still install and maintain the gem. Check this out for a more det...
How to see log files in MySQL?
...yslog).
To Enable them just follow below steps:
step1: Go to this file (/etc/mysql/conf.d/mysqld_safe_syslog.cnf) and remove or comment those line.
step2: Go to mysql conf file (/etc/mysql/my.cnf) and add following lines
To enable error log add following
[mysqld_safe]
log_error=/var/log/mysql/...
select * vs select column
...as to what you want, it will first need to check the table's definition in order to determine the columns on that table. That lookup will cost some time - not much in a single query - but it adds up over time
if you need only 2/3 of the columns, you're selecting 1/3 too much data which needs to be r...
What are the most common SQL anti-patterns? [closed]
...t *, you get whatever is in the table. Those columns may change names and order. Client code frequently relies on names and order. Every 6 months I'm asked how to preserve column order when modifying a table. If the rule was followed it wouldn't matter.
– Amy B
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Hashing a dictionary?
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@Ceaser That won't work because tuple implies ordering but dict items are unordered. frozenset is better.
– Antimony
Jul 30 '12 at 11:55
28
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How do I install a plugin for vim?
...ime files. You can see that set of directories via :set runtimepath?. In order to tell Vim to also look inside ~/.vim/vim-haml you'll want to add
set runtimepath+=$HOME/.vim/vim-haml
to your ~/.vimrc. You'll likely also want the following in your ~/.vimrc to enable all the functionality provid...
RESTful Authentication
...cated by signing the query parameters
sorted in lower-case, alphabetical order using the private credential
as the signing token. Signing should occur before URL encoding the
query string.
This technique is perhaps the more compatible with a Stateless architecture, and can also be implemente...
Can you do greater than comparison on a date in a Rails 3 search?
...er.id, :notetype => p[:note_type]).
where("date > ?", p[:date]).
order('date ASC, created_at ASC')
or you can also convert everything into the SQL notation
Note.
where("user_id = ? AND notetype = ? AND date > ?", current_user.id, p[:note_type], p[:date]).
order('date ASC, created...
Disable ONLY_FULL_GROUP_BY
...ution): you have to put the description of sql_mode inside a my.cnf file (/etc/my.cnf for instance) and restart the server. For instance, insert (below the [mysqld] section) sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITU...
How can I make an entire HTML form “readonly”?
...ion to just list the 'selected' items, without checkboxes. Like on a pizza order confirmation: just list all the ingredients you selected.
– marc82ch
Feb 20 '15 at 12:53
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