Centos 9 中安装 php 7.4
dnf install https://rpms.remirepo.net/enterprise/remi-release-9.rpm
dnf module list php
dnf install php74-php php74-php-fpm php74-php-mysqlnd php74-php-mcrypt php74-php-gd php74-php-bcmath php74-php-json php74-php-mbstring php74-php-xml php74-php-zip
systemctl enable php74-php-fpm
# /etc/opt/remi/php74/php.ini
# /etc/opt/remi/php74/php-fpm.conf
# 检查依赖是否完整...
macOS
Karabiner-Elements.app
建议将 cpas_lock 换为 fn，以防止与 macOS 一键打开/切换到 App（替代 Cmd + Tab） 中的按键产生冲突。
{
"description": "方向: caps_lock + h/j/k/l",
"manipulators": [
{
"from": {
"key_code": "h",
"modifiers": {
&qu...
有人时向某个位置发射激光
int Led = 13; // 内置的LED
int Laser = 12; // 激光头
int Sensor = 11; // 人体感应器
int enable = HIGH;
void setup() {
pinMode(Led, OUTPUT);
pinMode(Laser, OUTPUT);
pinMode(Sensor, INPUT);
}
void loop() {
digitalWrite(Led, enable ? HIGH : LOW); // 亮个灯用于指示是否在运行中
bool sensorStatus = digitalRead(Sensor);
if (enable &&...
按下亮灯，松开灭灯
int Red = 2; // 红灯
int Button = 13; // 按钮
int buttonStatus = 0;
void setup() {
pinMode(Red, OUTPUT);
pinMode(Button, INPUT_PULLUP);
}
void loop() {
buttonStatus = digitalRead(Button);
// 按下亮灯，松开灭灯
if (buttonStatus == HIGH) {
digitalWrite(Red, HIGH);
} else {
digitalWrite(Red, LOW);
}
}
按一下亮，再按来，依次循环
i...
线
+: 5v
-: GND
S: pin 9
示例
int Buzzer = 9; // pin 9
void setup() {
pinMode(Buzzer, OUTPUT);
}
void loop() {
tone(Buzzer, 1000); // 发出 1000hz 的声音
delay(1000);
noTone(Buzzer); // 关闭声音
delay(1000);
}
代码
int Buzzer = 9; // pin 9
int music[][2] = {
{ 392, 125 }, // [音调, 时长]
{ 392, 125 },
{ 440, 250 },
{ 392, 250 },
{ 532, 250 },
{ 4...
导出
let data = JSON.stringify(localStorage, null, 2);
let blob = new Blob([data], {type: "text/plain;charset=utf-8"});
let url = URL.createObjectURL(blob);
let link = document.createElement('a');
link.href = url;
link.download = 'LocalStorage_' + new Date().toISOString().replace(/[^0-9a-z]/ig, '') + '.txt';
link.click();
link.r...
绿灯风停，红灯刮风，红绿间隙黄灯。
int Red = 13; // 红灯
int Yellow = 12; // 黄灯
int Green = 11; // 绿灯
int FanA = 8; // 风扇 VINA
int FanB = 9; // 风扇 VINB
void setup() {
pinMode(FanA, OUTPUT);
pinMode(FanB, OUTPUT);
pinMode(Red, OUTPUT);
pinMode(Yellow, OUTPUT);
pinMode(Green, OUTPUT);
}
void loop() {
// 绿灯亮
digitalWrite(Green, HIGH);
...
void setup() {
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
digitalWrite(8, LOW );
digitalWrite(9, HIGH);
}
void loop() {
}
对齐：用 style=”text-align:center” 属性代替 quill 的 class=”ql-align-center” 版对齐功能
import Quill from 'quill';
const QuillAlign = Quill.import('attributors/style/align');
QuillAlign.whitelist = ['right', 'center', 'justify'];
Quill.register(QuillAlign, true);
字号：用 style=”font-size:18px;” 代替 qu...
目标
将对象的所有 key 配置给 watch
代码
const ImageableFields = [
'cover',
'detail',
'reply',
];
// 转换为 FormItem.prop: cover -> form._images_cover
const WatchableFields = ImageableFields.ma(v => `form._images_${v}`);
export default {
props: {
detail: {
type: Object,
default: () => ({}),
},
},
data() {
...
问题描述
数据库字段类型为 datetime，faker 格式为 Y-m-d H:i:s，factory::make() 出来的也是 Y-m-d H:i:s，但是 toArray() 之后变成了 c，c 类似 2024-01-02T03:04:05.000000Z。insert(c) 时候报了标题的信息。
解决方法
方法1:
# /config/database.php
'mysql' => [
'strict' => false, // true 改为 false
],
方法2:
# /app/Models/User.php
protected $casts = [
'created_...
适用版本： frp_0.52.3
服务端
frps.toml
bindPort = 7000
auth.token = "TOKEN"
log.to = "/var/log/frp/log"
allowPorts = [
{ single = 3389 },
{ start = 9000, end = 9999 }
]
webServer.addr = "0.0.0.0"
webServer.port = 7500
webServer.user = "man"
webServer.password = "srcret"
添加为服务 /etc/systemd/system/frpd.service
[Unit]
Desc...
