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AppInventor 文本框颜色怎么设置？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
如题：
文本框只能设置 文字颜色 和 背景颜色：
[hide]文本框的颜色没有直接的设置选项，跟着屏幕的交互颜色走的，具体请看文档：https://www.fun123.cn/reference/ ... terface.html#Screen
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AppInventor2文本输入框下面的横线怎么去掉？ - App应用开发 - 清泛IT社区...
Q：你好，文本输入框下面这条横线怎么去掉呢？
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这个属于系统本身的样式，待研究一下。。。
将文本输入框的“背景颜色”设置为“透明”即可实现输入框下面横线的隐藏：
效果参考如下：
（...
What's the difference between utf8_general_ci and utf8_unicode_ci?
Between utf8_general_ci and utf8_unicode_ci , are there any differences in terms of performance?
8 Answers
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搭建高可用mongodb集群（三）—— 深入副本集内部机制 - 大数据 & AI - 清...
...识；而一致性协议强调的是操作的顺序一致性，比如同时读写一个数据会不会出现脏数据。一致协议在分布式里有一个经典的算法叫“Paxos算法”，后续再介绍。
上面有个问题，就是所有从节点的最后操作时间都是一样怎么办...
“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
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MySQL's utf8 permits only the Unicode characters that can be represented with 3 bytes in UTF-8. Here you have a character that needs 4 bytes: \xF0\x90\x8D\x83 (U+10343 GOTHIC LETTER SAUIL).
If you have MySQL 5.5 or later you can cha...
What is the difference between “Form Controls” and “ActiveX Control” in Excel 2010?
...your code- try inserting an ActiveX control into a worksheet, bring up the VBA editor (ALT + F11) and you will be able to access the control programatically. You can't do this with form controls (macros must instead be explicitly assigned to each control), but form controls are a little easier to us...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
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The default collation for stored procedure parameters is utf8_general_ci and you can't mix collations, so you have four options:
Option 1: add COLLATE to your input variable:
SET @rUsername = ‘aname’ COLLATE utf8_unicode_ci; -- COLLATE added
CALL updateProductUsers(@rUsername...
Python locale error: unsupported locale setting
...he .UTF-8 part to the actual syntax found in the output of locale -a e.g. .utf8 on some systems.
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What is the best collation to use for MySQL with PHP? [closed]
...aring characters in the language) and performance. The only special one is utf8_bin which is for comparing characters in binary format.
utf8_general_ci is somewhat faster than utf8_unicode_ci, but less accurate (for sorting). The specific language utf8 encoding (such as utf8_swedish_ci) contain add...
UTF-8: General? Bin? Unicode?
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In general, utf8_general_ci is faster than utf8_unicode_ci, but less correct.
Here is the difference:
For any Unicode character set, operations performed using the _general_ci collation are faster than those for the _unicode_ci coll...