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How do I delete unpushed git commits?
I accidentally committed to the wrong branch.
How do I delete that commit?
7 Answers
7...
Dealing with multiple Python versions and PIP?
Is there any way to make pip play well with multiple versions of Python? For example, I want to use pip to explicitly install things to either my site 2.5 installation or my site 2.6 installation.
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NumPy array initialization (fill with identical values)
...irect method than empty() followed by fill() for creating an array filled with a certain value:
>>> np.full((3, 5), 7)
array([[ 7., 7., 7., 7., 7.],
[ 7., 7., 7., 7., 7.],
[ 7., 7., 7., 7., 7.]])
>>> np.full((3, 5), 7, dtype=int)
array([[7, 7, 7, 7, 7],
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How to change a nullable column to not nullable in a Rails migration?
I created a date column in a previous migration and set it to be nullable. Now I want to change it to be not nullable. How do I go about doing this assuming there are null rows in that database? I'm ok with setting those columns to Time.now if they're currently null.
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Getting the first character of a string with $str[0]
... sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right – in all respects – to use this notation?
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What is the difference between t.belongs_to and t.references in rails?
...ferences and t.belongs_to ?
Why are we having those two different words? It seems to me they do the same thing?
Tried some Google search, but find no explanation.
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How to create and write to a txt file using VBA
...added or modified based on the inputs. Since most of the contents are repetitive in that file, only the hex values are changing, I want to make it a tool generated file.
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How to get GET (query string) variables in Express.js on Node.js?
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In Express it's already done for you and you can simply use req.query for that:
var id = req.query.id; // $_GET["id"]
Otherwise, in NodeJS, you can access req.url and the builtin url module to url.parse it manually:
var url = require('...
Replace whole line containing a string using Sed
...follow
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edited Nov 30 '18 at 0:25
answered Jun 28 '12 at 13:15
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
... my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
5 Answers
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