I am using rails console and some models. I am running something:
Model.find(:all ).each do |x| p x.name end This is fine, it allows me to see all the values of a specific column, but after
Tag: Command
Ruby – Using `Require`
I am editing a gem, which has the usual require command, pointing to the loaded gem (the gem I am talking about is called nirvana, and the file contains require’navana’, require’ navana/shell’ and
Ruby-on-rails-3 – git push Heroku failed because it tried to install the development gem. The bundle_without command does not work.
An error occurred after issuing the git push heroku command. This at first seemed to be bundled by using the heroku config command without the need for development: test gems. However, I’m in this
Practical mysql database command
Connect: mysql -h host address -u user name-p user password (Note: u and root need not add spaces, the other is the same)
disconnect: exit (Enter) Create authorization: grant select on database.*
MySQL command summary (3)
MySQL data query
Several common types of conditional query comparison operator <,>,<=, >=,=,!= logical transport symbol and, or, not fuzzy query where field like Value (% stands for r
How do I call the “AT command” of the GSM modem in the codeys? Not a standard Send_SMS and E.T.C
I have a gsm-modem and plc, plc sees a modem (I use *.lib and the function block “openPort”), but I don’t understand how to write “in the modem” at command”, such as “ate0”. First, in order to i
The correct command retrieves remote Mercurial update from my second machine
I am new to Mercurial.
>I initialized a Mercurial project on Machine A, submitted my changes and uploaded them to the remote Repository.
>Then I cloned the repository on machine B, submitted
Laravel implements custom generation file commands
Foreword The Entiy file is used in the current project, and the corresponding Entiy file must be created every time a table is added. , It is very troublesome to set variables at the same time. So
WPF – Continuous CANEXECUTE Call in WPF – Command
I am applying the MVVM pattern to a project. I have a UserControl which has a button which is bound to a command exposed by the ViewModel.
Since the button is visible, It will continue to call the
How to retrieve the output of the previous command and save it in the variable in the Python interactive shell?
Suppose I run an expensive operation foo(), which returns a large list, but I forgot to save the output of foo() in a variable. Assuming I run foo() again, I will get a different output.
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