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What does the PHP error message “Notice: Use of undefined constant” mean?
...
@BrianWhite Fun fact, when proposing to deprecate this functionality, I could find no evidence that it was ever officially encouraged, and only beta releases of PHP 3.0 included the behaviour without the notice, so it appears to be backw...
App Inventor 2 网络微数据库你用对了吗？ - App Inventor 2 中文网 - 清泛...
... 字节（9KB），超过则会保存失败。
来自：https://www.fun123.cn/reference/components/storage.html#TinyWebDB
学习了，谢谢分享
How do I grab an INI value within a shell script?
....} ) # set section prefix
ini=( ${ini[*]/%\\]/ \(} ) # convert text2function (1)
ini=( ${ini[*]/=/=\( } ) # convert item to array
ini=( ${ini[*]/%/ \)} ) # close array parenthesis
ini=( ${ini[*]/%\\ \)/ \\} ) # the multiline trick
ini=( ${ini[*]/%\( \)/\(\) \{} ) # conv...
App Inventor 2 构建纯血鸿蒙 HarmonyOS App · App Inventor 2 中文网
... NEXT
填写应用名称和包名（Bundle ID/包名，格式建议：cn.fun123.你的项目名）
3.2 申请签名证书
HarmonyOS NEXT 有两类证书需要了解：
（1）调试证书（Debug证书）
用途：开发测试阶段使用
来...
使用Activity启动器组件 · App Inventor 2 中文网
...页，例如，
Action：android.intent.action.VIEW
DataUri：https://www.fun123.cn
使用预先指定的消息启动邮件程序
2020 年 1 月 26 日：此示例已更新以适应 android 中的更改。 此处显示的电子邮件发送代码将在下一个应用程序发明者版本中运行...
What's the best way to trim std::string?
...of these 3 for my trimming needs:
#include <algorithm>
#include <functional>
#include <cctype>
#include <locale>
// trim from start
static inline std::string &ltrim(std::string &s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(),
std::not1(std:...
App Inventor 2 BLE扩展源码分析 - WriteBytes vs WriteStrings 23字节硬编...
...026.05 | 分析日期：2026-05-17 | 作者：App Inventor 2 中文网 www.fun123.cn
源码采用 Apache 2.0 授权。本文档由 ai2claw 分析整理，仅供学习参考。
Update a record without first querying?
...3 - try using EF across link servers that only support OpenQuery - lots of fun. Sometimes you absolutely need raw SQL to get the job done. Not always can you draw the code into isolation for testing. Its not a perfect world out there.
– barrypicker
Oct 3 '17...
Hidden Features of VB.NET?
...mentation tag that can be used to create own Enum-like types with extended functionality. This feature doesn't work in C#, though.
One example from a recent code of mine:
'
''' <completionlist cref="RuleTemplates"/>
Public Class Rule
Private ReadOnly m_Expression As String
Private Re...
SQL update fields of one table from fields of another one
...ite the dynamic sql to do the update based on the matching column names. a fun project actually :)
– Daniel Brink
May 4 '10 at 9:00
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