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App Inventor 2 天气预报App开发 - 第三方API接入的通用方法 · App Inventor 2 中文网
...解析
请求成功返回JSON示例
{
"code": "200",
"updateTime": "2021-11-15T16:35+08:00",
"fxLink": "http://hfx.link/2ax1",
"daily": [
{
"fxDate": "2021-11-15",
"sunrise": "06:58",
"sunset": "16:59",
"moonrise": "15:16",
"moonset": "03:40",
"moonP...
eclipse升级后启动失败：Heap堆内存不足 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...改 -Xmx521m 为 -Xmx3g
本来打算从Eclipse（2020-06）更新一下（2021-03），没想到升级成后Eclipse启动不了，错误日志如下：
!SESSION 2021-06-16 17:03:13.186 -----------------------------------------------
eclipse.buildId=4.19.0.I20210303-1800
java.version=11.0.6
ja...
Stack Overflow：StackExchange网络不同主题网站的”祖父“ - 更多技术 - ...
...识的地方，我们强调用户可以通过投票形式使正确的回答排名更靠前，且不允许主观性的回答。Quora的一个重要功能是关注你感兴趣的人，而我们并不在意这点，如果你有个具体问答迫切需要答案，那你最关心的是回答者是否有...
Using PHP with Socket.io
...the first repository like this.
use PHPSocketIO\SocketIO;
// listen port 2021 for socket.io client
$io = new SocketIO(2021);
$io->on('connection', function($socket)use($io){
$socket->on('chat message', function($msg)use($io){
$io->emit('chat message', $msg);
});
});
...
What does “Could not find or load main class” mean?
...an example of what a java command should look like:
java -Xmx100m com.acme.example.ListUsers fred joe bert
The above is going to cause the java command to do the following:
Search for the compiled version of the com.acme.example.ListUsers class.
Load the class.
Check that the class has a ma...
What is the difference between Reader and InputStream?
..., 128, 161 and 97 where a -> U+0061 -> 0x61 -> 97 and ‡ -> U+2021 -> 0xE280A1 (utf-8 encoding of 0x2021) -> 226 128 161.
A Reader lets you read the contents character by character so the contents "a‡a" are read as 3 characters 97, 8225 and 97 where a -> U+0061 -> 0x61 -&...
How to define custom configuration variables in rails
...ails 4
Assuming you put your custom variables into a yaml file:
# config/acme.yml
development:
:api_user: 'joe'
:api_pass: 's4cret'
:timeout: 20
Create an initializer to load them:
# config/initializers/acme.rb
acme_config = Rails.application.config_for :acme
Rails.application.configure ...
Inline SVG in CSS
...%20height%3D%27512%27%3E%0A%20%20%3Cpath%20d%3D%27M257.063%200C127.136%200%2021.808%20105.33%2021.808%20235.266c0%2041.012%2010.535%2079.541%2028.973%20113.104L3.825%20464.586c345%2012.797%2041.813%2012.797%2015.467%200%2029.872-4.721%2041.813-12.797v158.184z%27%20fill%3D%27#{$color-rgb}%27%2F%3E%3C...
AI2 Media Notification
German Version Version Adjustments 1.0 (2021-05-05) Initial Version 1.1 (2021-07-11) GetDuration & GetDurationString removed. Instead use extension UrsMediaHelper. Method SetMetaDataFromMH for getting metadata from an UrsMediaHelper component adde...
What Are the Differences Between PSR-0 and PSR-4?
...y the part following the anchor point.
For example if you define that the Acme\Foo\ namespace is anchored in src/, with PSR-0 it means it will look for Acme\Foo\Bar in src/Acme/Foo/Bar.php while in PSR-4 it will look for it in src/Bar.php, allowing for shorter directory structures. On the other han...