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Rails: Using build with a has_one association in rails
...en write accepts_nested_attributes_for :profile this in User model. and in form which user is being created write <%= f.simple_fields_for :profile do |p| %> this and go on.
– zeal
May 16 '15 at 6:22
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How can I scan barcodes on iOS?
...codes and the iphone code in the project were retired around the start of 2014.
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Access denied for user 'test'@'localhost' (using password: YES) except root user
...nt manner. For instance, if you create a user like this:
create user user01 identified by 'test01';
MySQL expects you give some privilege using grant all on <your_db>.* to user01;
Don't forget to flush privileges;
But, if you create user like that (by passing an IP address), you have to ...
Blocks and yields in Ruby
...zling at first.
In Ruby, methods may receive a code block in order to perform arbitrary segments of code.
When a method expects a block, it invokes it by calling the yield function.
This is very handy, for instance, to iterate over a list or to provide a custom algorithm.
Take the following ...
Diff output from two programs without temporary files
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For anyone curious, this is how you perform process substitution in using the Fish shell:
Bash:
diff <(./a) <(./b)
Fish:
diff (./a | psub) (./b | psub)
Unfortunately the implementation in fish is currently deficient; fish will either hang or use a tem...
JavaScript regex multiline flag doesn't work
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For performance issues, it is highly recommended to use the *? quantifier instead of * in order to avoid greediness. This will avoid catching the last <h1> of the document: that's probably not what you want and that's not effi...
How do you round to 1 decimal place in Javascript?
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If you use Math.round(5.01) you will get 5 instead of 5.0.
If you use toFixed you run into rounding issues.
If you want the best of both worlds combine the two:
(Math.round(5.01 * 10) / 10).toFixed(1)
You might want to create a function for thi...
.bashrc/.profile is not loaded on new tmux session (or window) — why?
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Former answers provided solutions but didn't explain the reason. Here it is.
This is related to the Bash init files. By default, ~/.bashrc is used in an interactive, non-login shell. It won't be sourced in a login shell. Tmu...
Convert Go map to json
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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How to reload apache configuration for a site without restarting apache
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