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What are Java command line options to set to allow JVM to be remotely debugged?
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Before Java 5.0, use -Xdebug and -Xrunjdwp arguments. These options will still work in later versions, but it will run in interpreted mode instead of JIT, which will be slower.
From Java 5.0, it is better to use the -agentlib:jdwp singl...
UITableView - scroll to the top
...Inset from the top. For example: tableView.contentInset = UIEdgeInsetsMake(5.0f, 0.0f, 250.0f, 0.0f);. If that is the case, in your code the tableView scrolls to (0.0f, 5.0f).
– tolgamorf
May 8 '13 at 20:36
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Python add item to the tuple
...being added with parentheses and a comma.
t = ('a', 4, 'string')
t = t + (5.0,)
print(t)
out: ('a', 4, 'string', 5.0)
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How to embed small icon in UILabel
...amed:"iPhoneIcon")
// Set bound to reposition
let imageOffsetY: CGFloat = -5.0
imageAttachment.bounds = CGRect(x: 0, y: imageOffsetY, width: imageAttachment.image!.size.width, height: imageAttachment.image!.size.height)
// Create string with attachment
let attachmentString = NSAttributedString(attac...
淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...看到，笔记本电脑的尺寸这一属性有着10个枚举值，而“蓝牙功能”这个属性值是个布尔值，数据的筛选性非常差。
在用户所选择的过滤条件不确定的情况下，解决全属性问题的思路有两个：一个是穷举所有可能的过滤条件组...
How to convert QString to std::string?
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As of Qt 5.0, QString::toStdString() now uses QString::toUtf8() to perform the conversion, so the Unicode properties of the string will not be lost (qt-project.org/doc/qt-5.0/qtcore/qstring.html#toStdString).
– E...
Get Android API level of phone currently running my application [duplicate]
... 4.4 KitKat Watch
21 LOLLIPOP Android 5.0 Lollipop
22 LOLLIPOP_MR1 Android 5.1 Lollipop
23 M Android 6.0 Marshmallow
24 N Android 7.0 Nougat
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Run a single migration file
... rails 5 you can also use rails instead of rake
Rails 3 - 4
# < rails-5.0
rake db:migrate:up VERSION=20160920130051
Rails 5
# >= rails-5.0
rake db:migrate:up VERSION=20160920130051
# or
rails db:migrate:up VERSION=20160920130051
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Adding a column to an existing table in a Rails migration
... a migration like this
class AddEmailToUsers < ActiveRecord::Migration[5.0]
def change
end
end
In that case you have to manually an add_column to change:
class AddEmailToUsers < ActiveRecord::Migration[5.0]
def change
add_column :users, :email, :string
end
end
And then run ra...
Overload with different return type in Java?
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Before Java 5.0, when you override a method, both parameters and return type must match exactly. In Java 5.0, it introduces a new facility called covariant return type. You can override a method with the same signature but returns a subc...