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Rails: confused about syntax for passing locals to partials
...tly pass values the same way all the time, and you won't have problems. In order to learn about this, I went directly to the code itself (actionpack/lib/base.rb, render() method in Rails 2; Rails 3 is different). It's a good exercise.
Furthermore, don't worry about "bothering" people on SO. That's ...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
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@ariel The 'correct' way is to get all the wheels, ordered by CarId (1 select), and if more details than the CarId are required, make a second query for all cars (2 queries total). Printing things out is now optimal, and no indexes or secondary storage were required (you can ...
What's the best way to unit test protected & private methods in Ruby?
...de, or the given
block, within the context of the receiver (obj). In order to set
the context, the variable self is set to obj while the code is
executing, giving the code access to obj's instance variables. In
the version of instance_eval that takes a String, the optional
...
Can't find Request.GetOwinContext
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You may need to add the NuGet package Microsoft.Owin.Host.SystemWeb in order to do this:
HttpContext.Current.GetOwinContext().GetUserManager<ApplicationUserManager>();
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Ship an application with a database
... Android requires that you create a class that extends SQLiteOpenHelper in order to work with a Sqlite database.)
package android.example;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.Context;
import a...
.htm vs .html ? Which file extension naming is more correct? [closed]
...ays use the shorter .htm for our file names since file extensions are typically 3 characters long.
AND MORE ON: http://www.sightspecific.com/~mosh/WWW_FAQ/ext.html or http://www.sightspecific.com/~mosh/WWW_FAQ/ext.htm
I think I should add this part here:
There is one single slight difference betw...
Finding local maxima/minima with Numpy in a 1D numpy array
...max_peakind = signal.find_peaks_cwt(data, np.arange(1,10))
# inverse (in order to find minima)
inv_data = 1/data
# minima : use builtin function fo find (min) peaks (use inversed data)
min_peakind = signal.find_peaks_cwt(inv_data, np.arange(1,10))
#show results
print "maxima", data[max_peakind]
...
Python: finding an element in a list [duplicate]
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The index method of a list will do this for you. If you want to guarantee order, sort the list first using sorted(). Sorted accepts a cmp or key parameter to dictate how the sorting will happen:
a = [5, 4, 3]
print sorted(a).index(5)
Or:
a = ['one', 'aardvark', 'a']
print sorted(a, key=len).ind...
Leading zeros for Int in Swift
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With Swift 5, you may choose one of the three examples shown below in order to solve your problem.
#1. Using String's init(format:_:) initializer
Foundation provides Swift String a init(format:_:) initializer. init(format:_:) has the following declaration:
init(format: String, _ arguments:...
Rails 4 LIKE query - ActiveRecord adds quotes
...gt; ["name LIKE ? OR postal_code like ?", "%#{search}%","%#{search}%"], order => 'name'
end
See the docs on AREL conditions for more info.
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