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指定组件的大小 · App Inventor 2 中文网
...component in the designer, you are typically given the opportunity to specify its height and width. There are four choices:
Automatic: Size is chosen by the system
Fill parent: Size is chosen to fill the space available.
Size specified in pixels
Size in percent of Screen (not available fo...
RadioButton单选按钮扩展集合 · App Inventor 2 中文网
...true
IncludeSubLayouts参数:
true: 包含子布局中的CheckBox
false: 仅包含直接在布局中的CheckBox
属性
底部间距增加
增加所有受影响RadioButton的底部内边距。
左侧间距增加
增加所有受影响RadioButton的左侧内...
Git undo local branch delete
...
You can use git reflog to find the SHA1 of the last commit of the branch. From that point, you can recreate a branch using
git branch branchName <sha1>
Edit: As @seagullJS says, the branch -D command tells you the sha1, so if you have...
DropDownList's SelectedIndexChanged event not firing
...ve a DropDownList object in my web page. When I click on it and select a different value, nothing happens, even though I have a function wired up to the SelectedIndexChanged event.
...
powershell - extract file name and extension
I need to extract file name and extension from e.g. my.file.xlsx. I don't know the name of file or extension and there may be more dots in the name, so I need to search the string from the right and when I find first dot (or last from the left), extract the part on the right side and the part on the...
为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...来的拓展只能运行于安卓设备上，对于iOS设备需要使用swift开发iOS版本的拓展。
环境配置
安装好 Java开发环境 以及 Ant编译环境，这里以Windows为例，供参考：
安装完JDK后配置环境变量 计算机（右键）→属性→高级系...
What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
What are the precise rules for when you can omit (omit) parentheses, dots, braces, = (functions), etc.?
6 Answers
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How do you join on the same table, twice, in mysql?
...ther join, something along these lines:
SELECT toD.dom_url AS ToURL,
fromD.dom_url AS FromUrl,
rvw.*
FROM reviews AS rvw
LEFT JOIN domain AS toD
ON toD.Dom_ID = rvw.rev_dom_for
LEFT JOIN domain AS fromD
ON fromD.Dom_ID = rvw.rev_dom_from
EDIT:
All you're doing is joining i...
GB English, or US English?
If you have an API, and you are a UK-based developer with a highly international audience, should your API be
28 Answers
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实时开发、测试和调试工具 · App Inventor 2 中文网
...作系统：
对于 MacO，它是 /Applications/AppInventor/commands-for-Appinventor。
对于 GNU/Linux，它是 /usr/google/appinventor-extras/commands-for-Appinventor
对于 Windows，它可以位于多个位置之一，具体取决于它的安装方式。 在你的计算机上搜索 \And...