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How to perform element-wise multiplication of two lists?
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C++ template typedef
...e <size_t N>
using Vector = Matrix<N, 1>;
The type Vector<3> is equivalent to Matrix<3, 1>.
In C++03, the closest approximation was:
template <size_t N>
struct Vector
{
typedef Matrix<N, 1> type;
};
Here, the type Vector<3>::type is equivalent to...
Difference between json.js and json2.js
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3 Answers
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Add to Array jQuery
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301
For JavaScript arrays, you use push().
var a = [];
a.push(12);
a.push(32);
For jQuery objec...
How can I plot with 2 different y-axes?
...t y axes on the same plot
(some material originally by Daniel Rajdl 2006/03/31 15:26)
Please note that there are very few situations where it is appropriate to use two different scales on the same plot. It is very easy to mislead the viewer of the graphic. Check the following two examples and comm...
How to write one new line in Bitbucket markdown?
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It's possible, as addressed in Issue #7396:
When you do want to insert a <br /> break tag using Markdown, you end a line with two or more spaces, then type return or Enter.
shar...
Dual emission of constructor symbols
...d name for your Thing::foo() is easily parsed:
_Z | N | 5Thing | 3foo | E | v
prefix | nested | `Thing` | `foo`| end nested | parameters: `void`
You can read the constructor names similarly, as below. Notice how the constructor "name" isn't given, but instead a C clause:
_Z |...
Convert number strings with commas in pandas DataFrame to float
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Why does parseInt yield NaN with Array#map?
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483
The callback function in Array.map has three parameters:
From the same Mozilla page that you li...
Rails has_and_belongs_to_many migration
...First run your migrations, then edit the generated migration file.
Rails 3
rails g migration create_restaurants_users_table
Rails 4:
rails g migration create_restaurants_users
Rails 5
rails g migration CreateJoinTableRestaurantUser restaurants users
From the docs:
There is also a gene...