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Protected in Interfaces
...'t be protected!
That explains nothing, but fortunately someone raised an enhancement request for protected methods in interfaces as a JDK bug a couple of years ago, which sheds some light on the issue:
Protected methods in interfaces: share across packages
Since modifiers are a bit limite...
How to create a density plot in matplotlib?
...il.scipy.org/pipermail/scipy-user/2010-January/023877.html and there is an enhancement ticket at projects.scipy.org/scipy/ticket/1092 . Note, gaussian_kde is designed for n-dimensional data.
– Josef
Nov 11 '10 at 14:53
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...Lite 功能类似，但TaifunSQLite是收费的，美刀。
.aix 拓展下载：
cn.fun123.SQLite.aix
中文网测试案例
.aia 测试源码下载：
TestSqlite.aia
打开数据库
一般可以在屏幕初始化时打开db。如果数据...
Difference between Eclipse Europa, Helios, Galileo
...Eclipse team is now doing is fixing the bugs. There are very few interface enhancements since Europa. IMHO.
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How to fix corrupted git repository?
...t, compare it with the original to ensure you did not lose any file in the repair process.
Another alternative which worked for me was to reset the git head and index to its previous state using:
git reset --keep
You can also do the same manually by opening the Git GUI and selecting each "Staged ...
How to debug Lock wait timeout exceeded on MySQL?
... reason might be an extremely long running query, which is easier to solve/repair, however, and I will not describe this case here.
MySQL is usually able to deal with deadlocks if they are constructed "properly" within two transactions. MySQL then just kills/rollback the one transaction that owns f...
App Inventor 2 TableView 拓展：TableView 拓展：数据表格视图，表格展示...
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TableView 拓展
效果如下：
.aix 拓展下载：
cn.fun123.Table.aix
demo程序下载：
table_demo.aia
使用方法
初始化表格对象到一个布局中，并设置表头及表头背景颜色：
展示数据表格：
平...
App Inventor 2 SliderVertical 扩展：垂直的滑动条 · App Inventor 2 中文网
...组件旋转 90º，效果如下：
代码块如下：
.aix 拓展下载：
com.SliderVertical.aix
demo下载：
TestSliderVertical.aia
切换 目录 提交反馈 ...
App Inventor 2 使用 MaterialIcons 图标字体，快捷展示专业图标 · App Inventor 2 中文网
...快捷展示专业图标
字体下载
« 返回首页
平时布局的话，如果要使用图标，一般需要去找 png 图片，且透明背景的。如果需要根据不同常见图标进行变色的话，就需要准备多张不同样式的图标，...
App Inventor 2 “虚拟”屏幕：同一屏幕展示多屏内容，模拟切换屏幕 · App...
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虚拟屏幕（虚拟分屏）
开发步骤
demo下载：
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虚拟屏幕（虚拟分屏）
好处：大部分需要连接的组件（比如蓝牙客户端、MQTT、BluetoothLE、Wifi、Socket等）如果跨屏幕的话，都需要...