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How to set default values in Rails?
...ay:
class SetDefault < ActiveRecord::Migration
def self.up
change_column :people, :last_name, :type, :default => "Doe"
end
def self.down
# You can't currently remove default values in Rails
raise ActiveRecord::IrreversibleMigration, "Can't remove the default"
end
end
Be...
How can I change the copyright template in Xcode 4?
...
__MyCompanyName__ being ugly (or if you aren't coding for the company set up in your profile), let's change it.
Click on your project root in the Project Navigator on the left
Enable your Utilities view on the right while t...
Node.js Logging
...on: false, timestamp: true }),
new winston.transports.File({ filename: __dirname + '/debug.log', json: false })
],
exceptionHandlers: [
new (winston.transports.Console)({ json: false, timestamp: true }),
new winston.transports.File({ filename: __dirname + '/exceptions.log', json: fal...
Cropping an UIImage
... CGRect (credits to this answer answered by @rob mayoff):
func CGRectMake(_ x: CGFloat, _ y: CGFloat, _ width: CGFloat, _ height: CGFloat) -> CGRect {
return CGRect(x: x, y: y, width: width, height: height)
}
The usage is:
if var image:UIImage = UIImage(named:"one.jpg"){
let croppedIma...
libpng warning: iCCP: known incorrect sRGB profile
...Projects (Android Studio) navigate into res folder.
For example:
C:\{your_project_folder}\app\src\main\res\drawable-hdpi\mogrify *.png
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Notification click: activity already open
...
Try setting the flags to Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP instead.
From the documentation for FLAG_ACTIVITY_CLEAR_TOP (emphasis mine):
If set, and the activity being launched is already running in the
current task, then in...
ASP.NET MVC 3: Override “name” attribute with TextBoxFor
...ame, use Name:
@Html.TextBoxFor(x => x.Data, new { Name = Model.Key + "_Data", id = Model.Key + "_Data" })
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Detecting iOS / Android Operating system
...ng iPAD Pro: return this: Safari: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Safari/605.1.15
– Ivan Ferrer
Jun 9 at 18:24
...
surface plots in matplotlib
...a surface.
Here's a smooth surface example:
import numpy as np
from mpl_toolkits.mplot3d import Axes3D
# Axes3D import has side effects, it enables using projection='3d' in add_subplot
import matplotlib.pyplot as plt
import random
def fun(x, y):
return x**2 + y
fig = plt.figure()
ax = fi...
Difference between Pig and Hive? Why have both? [closed]
... answered Jul 28 '10 at 19:08
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