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App Inventor 2 中文网 · 升级日志
... MQTT、 ClientSocket 拓展文档及翻译。 230516 2023/05/16 优化 启用HSTS（HTTP Strict Transport Security）安全机制。 升级 启用 h2（HTTP 2.0）协议。 230418 2023/04/18 新增 公安备案通过，备...
关于虚拟屏的隐藏问题 - App应用开发 - 清泛IT社区，为创新赋能！
...体怎么隐藏 可不可以讲明白点？逍遥虎 发表于 2024-03-24 16:52
具体怎么隐藏 可不可以讲明白点？
“可见性”这个属性来控制显示和隐藏，真则显示，假则隐藏。任何组件都是这样的。明白 ,谢谢{:8_315:}
psql: FATAL: database “” does not exist
... it in the past on other machines but it's giving me some trouble when installing on my macbook. I've installed the application and I ran:
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Prevent the keyboard from displaying on activity start
...g both in code, and in xml! Indeed, this is the most correct answer! Especially since it was probably that 3 minutes you spent writing both methods that made you not first ;-)
– eric
Apr 21 '17 at 1:13
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Swift: declare an empty dictionary
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edited Jul 24 '16 at 9:38
answered Jun 4 '14 at 9:15
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How to turn NaN from parseInt into 0 for an empty string?
...to "truthy"
– Pablo Recalde
Aug 26 '16 at 9:31
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show 6 mo...
Parallelize Bash script with maximum number of processes
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With GNU Parallel http://www.gnu.org/software/parallel/ you can write:
some-command | parallel do-something
GNU Parallel also supports running jobs on remote computers. This will run one per CPU core on the remote computers - even if ...
How to know when UITableView did scroll to bottom in iPhone
...st way is to test a point at the bottom of the screen and use this method call when ever the user scrolls (scrollViewDidScroll):
- (NSIndexPath *)indexPathForRowAtPoint:(CGPoint)point
Test a point near the bottom of the screen, and then using the indexPath it returns check if that indexPath is th...
Inspect attached event handlers for any DOM element
...k= handler or HTML <element onclick="handler"> can be retrieved trivially from the element.onclick property from script or in-debugger.
Event handlers attached using DOM Level 2 Events addEventListener methods and IE's attachEvent cannot currently be retrieved from script at all. DOM Level 3 ...
How to trim a file extension from a String in JavaScript?
...and x.slice(0, -4) looks great! Thanks! And thank you to everyone else for all the other robust alternatives provided!
– ma11hew28
Nov 23 '10 at 6:12
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