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How do I plot in real-time in a while loop using matplotlib?
...y as np
import matplotlib.pyplot as plt
plt.axis([0, 10, 0, 1])
for i in range(10):
y = np.random.random()
plt.scatter(i, y)
plt.pause(0.05)
plt.show()
Note some of the changes:
Call plt.pause(0.05) to both draw the new data and it runs the GUI's event loop (allowing for mouse in...
Seeding the random number generator in Javascript
...ive) equivalent to Math.random(), if you want random numbers of a specific range, read this article on MDN. If you only want the raw bits, simply remove the final division operation.
Another thing to note are the limitations of JS. Numbers can only represent whole integers up to 53-bit resolution. ...
Pickle or json?
...
This is not a wide ranging benchmark, but I had an existing game where it was saving the levels using pickle (python3). I wanted to try jsonpickle for the human readable aspect - however the level saves were sadly much slower. 1597ms for jsonpi...
How to validate an OAuth 2.0 access token for a resource server?
...3Zg
Respond:
{
"audience":"8819981768.apps.googleusercontent.com",
"user_id":"123456789",
"scope":"https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email",
"expires_in":436
}
Microsoft way
Microsoft - Oauth2 check an authorization
Github way
...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
...nt something without creating a new line - you can do this:
for number in range(0, 10):
print(number, end=', ')
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Storing time-series data, relational or non?
...of inserts, while reads are column based (in most cases you want to read a range of data from a specific column, representing a metric)
I have found Columnar Databases (google it, you'll find MonetDB, InfoBright, parAccel, etc) are doing terrific job for time series.
As for your question, which p...
Rails: Using build with a has_one association in rails
... the error message. It is telling you that you do not have required column user_id in the profile table.
Setting the relationships in the model is only part of the answer.
You also need to create a migration that adds the user_id column to the profile table.
Rails expects this to be there and if ...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
... with random indices, it's better to generate enough random numbers in the range, and then traversing the List once with a listIterator(), calling remove() at appropriate indices. There are questions on stackoverflow on how to generate random but distinct numbers in a given range.
With this, your a...
How do I erase an element from std::vector by index?
...ector.erase( vector.begin() + 3 ); // Deleting the fourth element
Erasing range of elements:
vector.erase( vector.begin() + 3, vector.begin() + 5 ); // Deleting from fourth element to sixth element
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Postgres and Indexes on Foreign Keys and Primary Keys
...und indices, since those are applied left to right: i.e compound index on [user_id, article_id] on comments table would effectively cover both querying ALL comments by user (e.g. to show aggregated comments log on website) and fetching all comments made by this user for a specific article. Adding a ...