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Rails: How to list database tables/objects using the Rails console?
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308
You are probably seeking:
ActiveRecord::Base.connection.tables
and
ActiveRecord::Base.conn...
Using Mockito's generic “any()” method
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edited Nov 23 '19 at 10:57
answered Jun 17 '15 at 8:19
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How to find out element position in slice?
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3
I agree with Evan. Additional comment: it's more idiomatic to return just an int where -1 indicates "not found" (like bytes.IndexByte)
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git: Show index diff in commit message as comment
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Hotschke
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answered Jan 20 '11 at 17:09
Alan Haggai AlaviAlan Haggai Alavi
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Raise warning in Python without interrupting program
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3 Answers
3
Active
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What does the caret operator (^) in Python do?
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>>> 0^1
1
To explain one of your own examples:
>>> 8^3
11
Think about it this way:
1000 # 8 (binary)
0011 # 3 (binary)
---- # APPLY XOR ('vertically')
1011 # result = 11 (binary)
share
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how does multiplication differ for NumPy Matrix vs Array classes?
...find it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot instead of matrixmultiply.
E.g.
import numpy as np
x = np.arange(9).reshape((3,3))
y = np.arange(3)
print np.dot(x,y)
Or in newer versions of numpy, simply use x.dot(y)
Personally, I find it much more read...
Ruby/Rails: converting a Date to a UNIX timestamp
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354
The code date.to_time.to_i should work fine. The Rails console session below shows an example...
Difference between Xcode version (CFBundleShortVersionString) and build (CFBundleVersion)
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edited Jul 20 '12 at 17:36
answered Jul 30 '11 at 6:10
JW...
What Process is using all of my disk IO
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edited Dec 7 '14 at 14:13
Aaron Digulla
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a...