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Check if a method exists
...respondsToSelector:@selector(methodName:withEtc:)]) {
[obj methodName:123 withEtc:456];
}
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Default visibility for C# classes and members (fields, methods, etc.)?
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edited May 23 '17 at 12:34
Community♦
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answered Sep 21 '10 at 19:15
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Numpy - add row to array
... If it is a 2D-array, how can you then compare its row to a number: i < 3?
EDIT after OP's comment:
A = array([[0, 1, 2], [0, 2, 0]])
X = array([[0, 1, 2], [1, 2, 0], [2, 1, 2], [3, 2, 0]])
add to A all rows from X where the first element < 3:
import numpy as np
A = np.vstack((A, X[X[:,0]...
multi-layer perceptron (MLP) architecture: criteria for choosing number of hidden layers and size of
... hidden nodes we use a general rule of:
(Number of inputs + outputs) x 2/3
RoT based on principal components:
Typically, we specify as many hidden nodes as dimensions [principal
components] needed to capture 70-90% of the variance of the input data
set.
And yet the NN FAQ author calls ...
When correctly use Task.Run and when just async-await
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380
Note the guidelines for performing work on a UI thread, collected on my blog:
Don't block th...
How do PHP sessions work? (not “how are they used?”)
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Pascal MARTINPascal MARTIN
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Append text to input field
...nter - hashADH
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answered May 8 '09 at 20:50
Ayman HouriehAyman Hourieh
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Counting the occurrences / frequency of array elements
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36 Answers
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“Diff” an image using ImageMagick
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322
My own favorites are these two:
compare image1 image2 -compose src diff.png
compare image1 ...
How to vertical align an inline-block in a line of text?
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answered May 31 '11 at 17:06
MidasMidas
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