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Rails DB Migration - How To Drop a Table?
...ty migration and then populate it with the code you need.
You can find information about how to accomplish different tasks in a migration here:
http://api.rubyonrails.org/classes/ActiveRecord/Migration.html
More specifically, you can see how to drop a table using the following approach:
drop_tab...
Software keyboard resizes background image on Android
... The problem is that scrolling is, when using adjustPan, not working... (if you have a ScrollView), and thats annoying...
– Ted
Jan 13 '13 at 13:36
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How to initialize a struct in accordance with C programming language standards
... members are implicitly initialized the same as objects that have static storage duration." (https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html)
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Can JavaScript connect with MySQL?
...aScript Code/Data(json, e.g.) that it has retrieved from MySQL in advance. Or you might use PHP on a server to provide an http(json/REST/SOAP/... whatever) interface to access data that the php code retrieves from MySQL - and this http interface can be called by JavaScript code running anywhere, mai...
Number.sign() in javascript
...y nontrivial ways of finding number's sign ( signum function )?
May be shorter / faster / more elegant solutions than the obvious one
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How to move a file?
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os.rename(), shutil.move(), or os.replace()
All employ the same syntax:
import os
import shutil
os.rename("path/to/current/file.foo", "path/to/new/destination/for/file.foo")
shutil.move("path/to/current/file.foo", "path/to/new/destination/for/file.fo...
Initialise a list to a specific length in Python [duplicate]
...me initially-empty dict ten times, not ten distinct ones. Rather, use [{} for i in range(10)] or similar constructs, to construct ten separate dicts to make up your list.
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Java Swing revalidate() vs repaint()
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You need to call repaint() and revalidate(). The former tells Swing that an area of the window is dirty (which is necessary to erase the image of the old children removed by removeAll()); the latter tells the layout manager to recalculate the layout (which is necessary when ...
List Git commits not pushed to the origin yet [duplicate]
How do I list all commits which have not been pushed to the origin yet?
2 Answers
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Java : Comparable vs Comparator [duplicate]
What are the keys differences between Comparable and Comparator.
2 Answers
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