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include external .js file in node.js app
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// Define Car model
CarSchema = new Schema({
brand : String,
type : String
});
mongoose.model('Car', CarSchema);
}
module.exports.make = make;
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Find XOR of all numbers in a given range
... ^ 3 ^ 4 .. ^ b
b is greater than a, so just by safely dropping in a few extra brackets (which we can because it's associative), we can also say this:
f(b) = ( 0 ^ 1 ^ 2 ^ 3 ^ 4 .. ^ (a-1) ) ^ (a ^ a+1 ^ a+2 .. ^ b)
Which simplifies to:
f(b) = f(a-1) ^ (a ^ a+1 ^ a+2 .. ^ b)
f(b) = f(a-...
How to auto-generate a C# class file from a JSON string [closed]
Given the following JSON object,
3 Answers
3
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__init__ for unittest.TestCase
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+1 I'd initialise the base class before calling any object method though.
– Joachim Isaksson
Jun 27 '13 at 21:25
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What do you call the -> operator in Ruby?
...t simply do a drop-in replacement in all cases (because sometimes you need extra parentheses for lambda).
– Kelvin
Mar 15 '17 at 22:16
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What is the difference between class and instance attributes?
...just look in each instance's __dict__ and the class's __dict__. It just usually doesn't matter very much whether immutable types are shared or not.
– abarnert
Oct 29 '14 at 22:58
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Rails DB Migration - How To Drop a Table?
... ActiveRecord::Migration
def change
drop_table :users do |t|
t.string :email, null: false
t.timestamps null: false
end
end
end
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Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
... return bar;
}
You have to access the elements like this: foo.a[1]. The extra ".a" might look weird, but this trick adds great functionality to the C language.
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Class method differences in Python: bound, unbound and static
...n Python, there is a distinction between bound and unbound methods.
Basically, a call to a member function (like method_one), a bound function
a_test.method_one()
is translated to
Test.method_one(a_test)
i.e. a call to an unbound method. Because of that, a call to your version of method_two ...
Capture HTML Canvas as gif/jpg/png/pdf?
...(img);. The document.write code is making the data URL, them making a HTML string, then putting a copy of that string in the DOM, the browser then has to parse that HTML string, put another copy on the image element, then parse it again to turn the data URL into image data, then finally it can show ...