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How do I set up email confirmation with Devise?
...atabase_authenticatable
t.confirmable
...
end
If you're using devise 2.0+ this fails because devise no longer provides migration helpers, and so t.confirmable raises an error. Instead, copy the block labeled "Confirmable" from their migration guide.
3. Generate the devise views, with either o...
Solving “Who owns the Zebra” programmatically?
...
Here's a solution in Python based on constraint-programming:
from constraint import AllDifferentConstraint, InSetConstraint, Problem
# variables
colors = "blue red green white yellow".split()
nationalities = "Norwegian German Dane Swede English".split()
pet...
UIlabel layer.cornerRadius not working in iOS 7.1
...
//works perfect in Swift 2.0 for a circular or round image
@IBOutlet var theImage: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
//Make sure the width and height are same
self.theImage....
How to generate .NET 4.0 classes from xsd?
...owever, that most of the intrinsic options here haven't changed much since 2.0
For the options, use xsd /? or see MSDN; for example /enableDataBinding can be useful.
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Proper way to initialize a C# dictionary with values?
... application and go from there? It seems likely that you're targeting .NET 2.0 (which doesn't support it) or client profile framework, rather than a version of .NET that supports initialization syntax.
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Convert a row of a data frame to vector
... recommend unlist, which keeps the names.
unlist(df[1,])
a b c
1.0 2.0 2.6
is.vector(unlist(df[1,]))
[1] TRUE
If you don't want a named vector:
unname(unlist(df[1,]))
[1] 1.0 2.0 2.6
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How to check Django version
...cutable command:
$ python -c "import django; print(django.get_version())"
2.0
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
...opertyValuesHolder[1] = PropertyValuesHolder.ofFloat("Panel2Weight", 1.0f, 2.0f);
arrayOfPropertyValuesHolder[2] = PropertyValuesHolder.ofFloat("Panel3Weight", 2.0f, 0.0f);
ObjectAnimator localObjectAnimator = ObjectAnimator.ofPropertyValuesHolder(this, arrayOfPropertyValuesH...
log4j vs logback [closed]
...ld there are Facades (like Apache Commons Logging, slf4j or even the Log4j 2.0 API) and implementations (Log4j 1 + 2, java.util.logging, TinyLog, Logback).
Basically you should replace your selfmade wrapper with slf4j IF and only IF you are not happy with it for some reason. While Apache Commons Lo...
App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
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本文档最初由米尔斯学院（Mills College）的 Kate Feeney 为 AI Classic 编写。该计划在她的论文通...