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Rails how to run rake task
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You can run Rake tasks from your shell by running:
rake task_name
To run from from Ruby (e.g., in the Rails console or another Rake task):
Rake::Task['task_name'].invoke
To run multiple tasks in the same namespace with a single task, create t...
Fast way to get image dimensions (not filesize)
...ions also PPM, WEBP), and does only read the header.
The identify command (from ImageMagick) prints lots of image information for a wide variety of images. It seems to restrain itself to reading the header portion (see comments). It also has a unified output which file sadly lacks.
exiv2 gives you d...
How can I see the SQL generated by Sequelize.js?
...or: Please note that find* was refactored and uses only one options object from now on.. For the latest sequelize version (4) if you want to have the result for only one command:
User.findAll({where: {...}, logging: console.log})
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NSLog/printf specifier for NSInteger?
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So the only thing you can do unfortunately: Use %ld, and cast your values from NSInteger to long, or from NSUInteger to unsigned long.
Once you don't build for 32 bit anymore, you can just use %ld, without any cast.
shar...
Access to Modified Closure (2)
This is an extension of question from Access to Modified Closure . I just want to verify if the following is actually safe enough for production use.
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What generates the “text file busy” message in Unix?
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@FelipeValdes The name is historical from the terminology of a half century ago. For example, in multics the text segment of a program was distinct from the link segment, and even earlier people talked about binary text. stackoverflow.com/a/1282540/833300
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Unusual shape of a textarea?
...lick the 'Relaunch Now' button at the bottom of the
browser window.
from: http://html.adobe.com/webplatform/enable/
.container {
overflow: hidden;
shape-inside: polygon(200.67px 198.00px, 35.33px 198.47px, 34.67px 362.47px, 537.00px 362.74px, 535.67px 196.87px, 388.33px 197.00p...
How to trim leading and trailing white spaces of a string?
... to trim strings in go.
See them there : Trim
Here's an example, adapted from the documentation, removing leading and trailing white spaces :
fmt.Printf("[%q]", strings.Trim(" Achtung ", " "))
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Why is “if not someobj:” better than “if someobj == None:” in Python?
...An empty string is false."
False, 0, (), [], {} and "" are all different from None, so your two code snippets are not equivalent.
Moreover, consider the following:
>>> False == 0
True
>>> False == ()
False
if object: is not an equality check. 0, (), [], None, {}, etc. are all...
Removing a model in rails (reverse of “rails g model Title…”)
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Ye thanks. I restored the migration from the Trash but it turns out I had another missing migration too so I'm going to do what you suggest
– Mike T
Jul 23 '13 at 7:03
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