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App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
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《App Inventor 2 UrsPahoMqttClient 拓展中文文档（完整版）》
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MQTT拓展下载...
How do I make an asynchronous GET request in PHP?
...0,
$errno, $errstr, 30);
$out = "POST ".$parts['path']." HTTP/1.1\r\n";
$out.= "Host: ".$parts['host']."\r\n";
$out.= "Content-Type: application/x-www-form-urlencoded\r\n";
$out.= "Content-Length: ".strlen($post_string)."\r\n";
$out.= "Connection: Close\r\n\r\n";
if ...
Round a Floating Point Number Down to the Nearest Integer?
...
Nice addition. int(-1.1) == -1 while -1.1//1 == -2.0 however decimal.Decimal('-1.1')//1 == decimal.Decimal('-1') (as documented, claim 2 isn't true for decimal), so relying on how // behaves is not fully stable, even today.
...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
... naN
Nana
nani lol
--nnf
nnf--
nnn
None
uum
Zero cool
-zzz
1
1.1
1.234E10
5
11
Either of -g or -n, be aware of locale effect. You may want to specify LC_NUMERIC as us_EN.UTF-8 to avoid fr_FR.UTF-8 sort - with floating number failed:
$ LC_COLLATE=fr_FR.UTF-8 LC_NUMERIC=fr_FR.UTF-8 so...
Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
...com" https://s3.amazonaws.com/xxxxxxxxx/assets/fonts/my-cool-font.ttf
HTTP/1.1 200 OK
x-amz-id-2: Ay63Qb5uR98ag47SRJ91+YALtc4onRu1JUJgMTU98Es/pzQ3ckmuWhzzbTgDTCt+
x-amz-request-id: F1FFE275C0FBE500
Date: Thu, 14 Aug 2014 09:39:40 GMT
Access-Control-Allow-Origin: https://example.com
Access-Control-Al...
Kotlin: how to pass a function as parameter to another?
...ssing buz into foo
fun something() {
foo("hi", ::buz)
}
Since Kotlin 1.1 you can now use functions that are class members ("Bound Callable References"), by prefixing the function reference operator with the instance:
foo("hi", OtherClass()::buz)
foo("hi", thatOtherThing::buz)
foo("hi", this...
How to compare software version number using js? (only number)
...ath.min(a_components.length, b_components.length); will cause versions 2.0.1.1 and 2.0.1 to be treated as equal will it?
– Jon Egerton
Jul 26 '11 at 15:47
1
...
What's the point of JAXB 2's ObjectFactory classes?
..., so the create* methods do the hard work for you. Example (from the XHTML 1.1 schema):
@XmlElementDecl(namespace = "http://www.w3.org/1999/xhtml", name = "style", scope = XhtmlHeadType.class)
public JAXBElement<XhtmlStyleType> createXhtmlHeadTypeStyle(XhtmlStyleType value) {
return new J...
Boost程序库完全开发指南——深入C++“准”标准库高清PDF版 - 文档下载 - ...
Boost程序库完全开发指南——深入C++“准”标准库高清PDF版C++ Boost 标准库Boost是一个功能强大、构造精巧、跨平台、开源并且完全免费的C++程序库，有着C++‘准’标准库的美誉。它由C++标准委员会部分成员...Boost是一个功能...
What is the most efficient/elegant way to parse a flat table into a tree?
...dcrumbs |
+------------+-------------+
| Node 1 | 1 |
| Node 1.1 | 1,2 |
| Node 1.1.1 | 1,2,4 |
| Node 1.2 | 1,6 |
+------------+-------------+
A user suggested an edit today. SO moderators approved the edit, but I am reversing it.
The edit suggested that...