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Popup弹出菜单扩展 · App Inventor 2 中文网
...e.ullisroboterseite.ursai2popup.aix
示例应用: PopupExample.aia
dropdown_ursai2popup.aia
开发动机
MIT App Inventor包含从列表中选择组件，例如ListView组件。不幸的是，它总是填满整个屏幕，而且配置视图的选项很少。这里介绍...
Throw away local commits in Git
...
If your excess commits are only visible to you, you can just do
git reset --hard origin/<branch_name>
to move back to where the origin is. This will reset the state of the repository to the previous commit, and it will discard all local changes.
Doing a git revert makes new co...
What Java ORM do you prefer, and why? [closed]
... over time, the database itself is probably going to last longer.
Yes, you do have stored procedures and user defined types (UDT's) in your legacy database. Your database-tool should support that.
There are many other good ORM's. Especially Hibernate or iBATIS have a great community. But if you're...
Pimpl idiom vs Pure virtual class interface
...dentity is important. Always passed by reference, never by "value". Often, doesn't make sense to "copy" instances of the class at all. When it does make sense, a polymorphic "Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that woul...
Why do Twitter Bootstrap tables always have 100% width?
...n the bootstrap stretch according to their container, which you can easily do by placing your table inside a .span* grid element of your choice. If you wish to remove this property you can create your own table class and simply add it to the table you want to expand with the content within:
.table-...
How to dynamically create generic C# object using reflection? [duplicate]
...Activator.CreateInstance(makeme);
Per your edit: For that case, you can do this ...
var d1 = Type.GetType("GenericTest.TaskA`1"); // GenericTest was my namespace, add yours
Type[] typeArgs = { typeof(Item) };
var makeme = d1.MakeGenericType(typeArgs);
object o = Activator.CreateInstance(makeme);...
How to Unit test with different settings in Django?
...ince Django 1.4, there are ways to override settings during tests:
https://docs.djangoproject.com/en/dev/topics/testing/tools/#overriding-settings
TestCase will have a self.settings context manager, and there will also be an @override_settings decorator that can be applied to either a test method o...
How do you print in Sublime Text 2
...ke a great editor. I just started using it a week ago in eval mode and it doesn't seem to have any printing functionality. This seems preposterous to me, but I can't find it anywhere.
...
Should I use a data.frame or a matrix?
...u have data of the same type.
The answer depends on what you are going to do with the data in data.frame/matrix. If it is going to be passed to other functions then the expected type of the arguments of these functions determine the choice.
Also:
Matrices are more memory efficient:
m = matrix(1:...
Using a custom image for a UITableViewCell's accessoryView and having it respond to UITableViewDeleg
...
Sadly that method doesn't get called unless the internal button type provided when you use one of the predefined types is tapped. To use your own, you'll have to create your accessory as a button or other UIControl subclass (I'd recommend a bu...