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Ruby on Rails: How can I revert a migration with rake db:migrate?
...to revert.
eg. if you want to revert a migration with file name 3846656238_create_users.rb
rake db:migrate:down VERSION=3846656238
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Preferred Github workflow for updating a pull request after code review
...pull request and push the branch to GitHub. The pull request will automatically be updated with the additional commit.
#2 and #3 are unnecessary. If people want to see only where your branch was merged in (and not the additional commits), they can use git log --first-parent to only view the merge c...
overlay opaque div over youtube iframe
...text/html" width="520" height="330" src="http://www.youtube.com/embed/NWHfY_lvKIQ?wmode=opaque" frameborder="0"></iframe>
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Switching to a TabBar tab view programmatically?
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Like Stuart Clark's solution but for Swift 3:
func setTab<T>(_ myClass: T.Type) {
var i: Int = 0
if let controllers = self.tabBarController?.viewControllers {
for controller in controllers {
if let nav = controller as? UINavigationController, nav.topViewCont...
How do I install a custom font on an HTML site
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Yes, you can use the CSS feature named @font-face.
It has only been officially approved in CSS3, but been proposed and implemented in CSS2 and has been supported in IE for quite a long time.
You declare it in the CSS like this:
@font-face { font-family: Delicious; src: url('Delicious-Roman.otf')...
Convert Json Array to normal Java list
...= new ArrayAdapter<String>(ListViewData.this, android.R.layout.simple_list_item_1, android.R.id.text1, list);
listView.setAdapter(adapter);
listView.setOnItemClickListener(ne
Deep Learning（深度学习）学习笔记整理系列之（四） - 大数据 & AI - 清泛...
Deep Learning（深度学习）学习笔记整理系列之（四）Deep_Learning_Series_4Deep Learning,深度学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学...
Deep Learning（深度学习）学习笔记整理系列之（四） - 大数据 & AI - 清泛...
Deep Learning（深度学习）学习笔记整理系列之（四）Deep_Learning_Series_4Deep Learning,深度学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学...
Deep Learning（深度学习）学习笔记整理系列之（四） - 大数据 & AI - 清泛...
Deep Learning（深度学习）学习笔记整理系列之（四）Deep_Learning_Series_4Deep Learning,深度学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学...
Deep Learning（深度学习）学习笔记整理系列之（四） - 大数据 & AI - 清泛...
Deep Learning（深度学习）学习笔记整理系列之（四）Deep_Learning_Series_4Deep Learning,深度学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学...