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Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
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To address this you can either use a data migration or manually (manage.py shell) go in and update non-compliant values
– mgojohn
Oct 26 '14 at 23:13
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ggplot with 2 y axes on each side and different scales
...e that ggplot is in fact educating the average user about proper visualization techniques.
Maybe you can use faceting and scale free to compare the two data series? - e.g. look here: https://github.com/hadley/ggplot2/wiki/Align-two-plots-on-a-page
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CSS Progress Circle [closed]
...set via the data-progress attribute. Changes are animated using CSS transitions.
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
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(Updated - Thanks to the people who commented)
Modern Versions of PostgreSQL
Suppose you have a table named test1, to which you want to add an auto-incrementing, primary-key id (surrogate) column. The following command should be sufficient in recent versions of PostgreSQL:
ALTE...
Custom CSS Scrollbar for Firefox
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As of late 2018, there is now limited customization available in Firefox!
See these answers:
https://stackoverflow.com/a/54101063/405015
https://stackoverflow.com/a/53739309/405015
And this for background info: https://bugzilla.mozilla.org/show_bug.cgi?id=1460109
There'...
How to see if an NSString starts with a certain other string?
... you EVER seen Http or hTtP? Case sensitive is not relevant. Also the question was about checking if the string begins with http not about the string being shorter than 4 characters. hasPrefix: is better but this works just as well. Stop whining
– JonasG
Dec 27...
Automatically create an Enum based on values in a database lookup table?
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I'm doing this exact thing, but you need to do some kind of code generation for this to work.
In my solution, I added a project "EnumeratedTypes". This is a console application which gets all of the values from the database and constructs the enums from them. Then it saves all of the enums to an...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
...'m using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.length == 0 inside of an if statement.
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Struct like objects in Java
...in your tests. If you create a new class you might not see all possible actions. It's like defensive programming - someday getters and setters may be helpful, and it doesn't cost a lot to create/use them. So they are sometimes useful.
In practice, most fields have simple getters and setters. A poss...
Possible to make labels appear when hovering over a point in matplotlib?
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It seems none of the other answers here actually answer the question. So here is a code that uses a scatter and shows an annotation upon hovering over the scatter points.
import matplotlib.pyplot as plt
import numpy as np; np.random.seed(1)
x = np.random.rand(15)
y = np.random.rand(15)
n...