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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
4
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Cloning an Object in Node.js
...t comes with very similar built-in functionality through Object.assign().
Original answer::
For a shallow copy, use Node's built-in util._extend() function.
var extend = require('util')._extend;
var obj1 = {x: 5, y:5};
var obj2 = extend({}, obj1);
obj2.x = 6;
console.log(obj1.x); // still logs 5
...
How can I search sub-folders using glob.glob module?
...xt', recursive=True)
When recursive is set, ** followed by a path separator matches 0 or more subdirectories.
In earlier Python versions, glob.glob() cannot list files in subdirectories recursively.
In that case I'd use os.walk() combined with fnmatch.filter() instead:
import os
import fnmatch...
Source unreachable when using the NuGet Package Manager Console
...
Even though my Package Source was set to nuget.org in Package Manager Console, explicitly adding the -Source nuget.org argument fixed this for me.
So an example of use would be:
Install-Package Akka.net -Source nuget.org
Akka.net being your package that you want to ins...
use Winmerge inside of Git to file diff
...ge will be enough.
Git 2.5+ (Q2, 2015) is now aware of Winmerge as a diff or merge tool!
Original answer (2009-2012)
(msysgit, 1.6.5, DOS session)
The first part (using winmerge) is described in "How do I view ‘git diff’ output with visual diff program?"
C:\myGitRepo>git config --repla...
Autoreload of modules in IPython [duplicate]
...ere a way to have IPython automatically reload all changed code? Either before each line is executed in the shell or failing that when it is specifically requested to. I'm doing a lot of exploratory programming using IPython and SciPy and it's quite a pain to have to manually reload each module when...
Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]
...
Almost certainly, your reuse identifier "title" is incorrect.
We can see from the UITableView.h method signature of dequeueReusableCellWithIdentifier that the return type is an Implicitly Unwrapped Optional:
func dequeueReusableCellWithIdentifier(identifier: String!) -> Any...
How can I pad a String in Java?
...t — as others have mentioned and demonstrated in this answer — String.format() and the Formatter classes in the JDK are better options. Use them over the commons code.
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Copying text outside of Vim with set mouse=a enabled
...indeed the solution. But what if you want to select a lot of code that is more than on your screen? (then you have to scroll and select at the same time)
– Ozkan
Apr 2 '13 at 12:25
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