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Simple way to create matrix of random numbers
I am trying to create a matrix of random numbers, but my solution is too long and looks ugly
13 Answers
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How do I generate random numbers in Dart?
How do I generate random numbers using Dart?
13 Answers
13
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...d.isna(), in newer versions) checks for missing values in both numeric and string/object arrays. From the documentation, it checks for:
NaN in numeric arrays, None/NaN in object arrays
Quick example:
import pandas as pd
import numpy as np
s = pd.Series(['apple', np.nan, 'banana'])
pd.isnull(s...
sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t
I cannot figure out why this is giving me the error, The actual string I am trying to insert is 74 chars long, it's: "/gifs/epic-fail-photos-there-i-fixed-it-aww-man-the-tire-pressures-low.gif"
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Why am I seeing an “origin is not allowed by Access-Control-Allow-Origin” error here? [duplicate]
... case I was trying to connect to a different database in the EF connection string resulting in the CORS error (ASP.NET Web API)
– Tahir Khalid
Mar 5 '17 at 23:17
add a commen...
Difference between Control Template and DataTemplate in WPF
... is a TextBlock with the Text property set to the result of the Object's ToString method.
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Matplotlib plots: removing axis, legends and white spaces
...that newer versions of matplotlib may require bbox_inches=0 instead of the string 'tight' (via @episodeyang and @kadrach)
from numpy import random
import matplotlib.pyplot as plt
data = random.random((5,5))
img = plt.imshow(data, interpolation='nearest')
img.set_cmap('hot')
plt.axis('off')
plt.sa...
When should I use the assets as opposed to raw resources in Android?
...sets folder is slower since you will need to get a handle to it
based on a String. However some operations are more easily done by
placing files in this folder, like copying a database file to the
system’s memory. There’s no (easy) way to create an Android XML
reference to files inside the Asset...
Create a List of primitive int?
...
No you can't. You can only create List of reference types, like Integer, String, or your custom type.
It seems I can do List myList = new ArrayList(); and add "int" into this list.
When you add int to this list, it is automatically boxed to Integer wrapper type. But it is a bad idea to use r...
Using the field of an object as a generic Dictionary key
...gt;, but that is optional:
class Foo : IEquatable<Foo> {
public string Name { get; set;}
public int FooID {get; set;}
public override int GetHashCode() {
return FooID;
}
public override bool Equals(object obj) {
return Equals(obj as Foo);
}
public ...