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App Inventor 2 人脸识别App开发 - 第三方API接入的通用方法 · App Inventor 2 中文网
...的api平台特别多，这里仅以“旷视Face++”（faceplusplus.com.cn）作为演示，因为它提供足够多的免费调用次数，其他平台的使用方法都是几乎一样的。
这些第三方平台除了提供人脸识别功能外，还有其他AI相关的识别功能，比如文...
How do I round a decimal value to 2 decimal places (for output on a page)
...ou just need this for display use string.Format
String.Format("{0:0.00}", 123.4567m); // "123.46"
http://www.csharp-examples.net/string-format-double/
The "m" is a decimal suffix. About the decimal suffix:
http://msdn.microsoft.com/en-us/library/364x0z75.aspx
...
How to convert String to long in Java?
...g -> Long, Long.valueOf(primitiveLong). So Long number = Long.valueOf("123"), Long number = Long.parseLong("123") and Long number = Long.valueOf(Long.parseString("123") all end up doing pretty much the same thing. What you do want to be careful about is not calling constructors of the boxed pri...
Inspect attached event handlers for any DOM element
Is there any way to view what functions / code are attached to any event for a DOM element? Using Firebug or any other tool.
...
(Built-in) way in JavaScript to check if a string is a valid number
...rns true if the variable does NOT contain a valid number
Examples
isNaN(123) // false
isNaN('123') // false
isNaN('1e10000') // false (This translates to Infinity, which is a number)
isNaN('foo') // true
isNaN('10px') // true
Of course, you can negate this if you need...
Add a prefix to all Flask routes
..._ROOT config value to your prefix:
app.config["APPLICATION_ROOT"] = "/abc/123"
@app.route("/")
def index():
return "The URL for this page is {}".format(url_for("index"))
# Will return "The URL for this page is /abc/123/"
Setting the APPLICATION_ROOT config value simply limit Flask's session...
How can I pass a Bitmap object from one activity to another
...yteArray, then it can be safely passed via an Intent.
Implementation
The function is contained in a separate thread using Kotlin Coroutines because the Bitmap compression is chained after the Bitmap is created from an url String. The Bitmap creation requires a separate thread in order to avoid App...
How to get UTF-8 working in Java webapps?
...t, when the user writes the following to the address bar of the browser:
https://localhost:8443/ID/Users?action=search&name=*ж*
the character ж is handled as UTF-8 and is encoded to (usually by the browser before even getting to the server) as %D0%B6.
POST request are not affected by this...
致PHP路上的“年轻人” - PHP - 清泛IT社区，为创新赋能！
...趁着年轻，赶紧造。
作者：Pangee
文章源自：http://pangee.cn/for-young-man@20150916.html
Func vs. Action vs. Predicate [duplicate]
...lt;int> myAction = new Action<int>(DoSomething);
myAction(123); // Prints out "123"
// can be also called as myAction.Invoke(123);
Func<int, double> myFunc = new Func<int, double>(CalculateSomething);
Console.Wr...