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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...
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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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....
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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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...
How to check Django version
...cutable command:
$ python -c "import django; print(django.get_version())"
2.0
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App Inventor 2 Encrypt.Security 安全性扩展：MD5哈希，SHA1和SHA256哈希...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索
App Inventor 2 Encrypt.Security 安全性...
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...
Set operations (union, intersection) on Swift array?
... of two sets
firstSet.symmetricDifference(secondSet)// exclusiveOr
Swift 2.0 can calculate on array arguments:
set1.union(array2) // {"a", "b", "c", "d"}
set1.intersect(array2) // {"a", "b"}
set1.subtract(array2) // {"c"}
set1.exclusiveOr(array2) // {"c", "d"}
Swift 1.2+ can calcula...
Difference between CouchDB and Couchbase
...ache Software Foundation and is released under the Apache License, Version 2.0 (DFSG-compatible, FSF-approved, OSI-approved, GPL-compatible, non-copyleft, commercial-friendly).
Philosophy
I have never seen it directly pointed out but this may be actually the most important difference between those...