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Many-to-many relationship with the same model in rails?

...documentation on the subject. There's a section called “Many-to-many”, and of course the documentation on the class methods themselves. Simplest scenario, uni-directional, no additional fields This is the most compact in code. I'll start out with this basic schema for your posts: create_tabl...
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gulp command not found - error after installing gulp

I've installed gulp both globally and locally using 39 Answers 39 ...
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Find the most frequent number in a numpy vector

...s: http://docs.scipy.org/doc/numpy/reference/generated/numpy.bincount.html and then probably use np.argmax: a = np.array([1,2,3,1,2,1,1,1,3,2,2,1]) counts = np.bincount(a) print(np.argmax(counts)) For a more complicated list (that perhaps contains negative numbers or non-integer values), you can us...
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JQuery - find a radio button by value

... I'm using jQuery 1.6 and this did not work for me: $(":radio[value=foobar]").attr('checked',true); Instead, I'm using: $('[value="foobar"]').attr('checked',true); and it works great. The actual code I'm using clears the radios first and uses pr...
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Is there a standardized method to swap two variables in Python?

...om left to right. Notice that while evaluating an assignment, the right-hand side is evaluated before the left-hand side. http://docs.python.org/3/reference/expressions.html#evaluation-order That means the following for the expression a,b = b,a : the right-hand side b,a is evaluated,...
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What does an underscore in front of an import statement mean?

...river{}) Once it's registered in this way, sqlite3 can be used with the standard library's sql interface in your code like in the example: db, err := sql.Open("sqlite3", "./foo.db") share | improv...
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How can I git stash a specific file?

... EDIT: Since git 2.13, there is a command to save a specific path to the stash: git stash push <path>. For example: git stash push -m welcome_cart app/views/cart/welcome.thtml OLD ANSWER: You can do that using git stash --patch (or git stash -p) -- you...
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Getting the last revision number in SVN?

...P, Perl, or Python (preferably PHP), I need a way to query an SVN database and find out the last revision number sent to SVN. I don't need anything other than that. It needs to be non-intensive (so I do it every 5 minutes as a cron job; SVN's performance should not be affected). ...
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Using “like” wildcard in prepared statement

I am using prepared statements to execute mysql database queries. And I want to implement a search functionality based on a keyword of sorts. ...
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How to find the width of a div using vanilla JavaScript?

... answered Jan 24 '11 at 21:48 Andy EAndy E 300k7575 gold badges456456 silver badges436436 bronze badges ...