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How to check if an app is installed from a web-page on an iPhone?
... a specified page, like this:
setTimeout(function () { window.location = "https://itunes.apple.com/appdir"; }, 25);
window.location = "appname://";
If the second line of code gives a result then the first row is never executed.
Hope this helps!
Similar question:
iPhone browser: Checking if iP...
How do you truncate all tables in a database using TSQL?
... can then truncate the tables without foreign keys afterwards.
See http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=65341 and http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=72957 for further details.
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...
COM对象IWebBrowser2,IHTMLDocument2,IHTMLWindow2,IHTMLElement 相互获取 ...
...ocument2> spHtmlDoc;
spHtmlWin->get_document(&spHtmlDoc);
http://www.tsingfun.com/html/2015/dev_1111/968.html
此文中有通过htmlwin获取htmldoc的例子。
How do you post to an iframe?
...t;
<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>Form Iframe Demo</title>
</head>
<body>
<form action="do_stuff.asp" method="post" target="my_frame">
...
Python to print out status bar and percentage
...
I found useful library tqdm (https://github.com/tqdm/tqdm/, previously: https://github.com/noamraph/tqdm). It automatically estimates time of completion and can be used as iterator.
Usage:
import tqdm
import time
for i in tqdm.tqdm(range(1000)):
t...
Chaining multiple MapReduce jobs in Hadoop
...order.
Or you can use a Cascade (and MapReduceFlow) in Cascading ( http://www.cascading.org/ ). A future version will support Riffle annotations, but it works great now with raw MR JobConf jobs.
A variant on this is to not manage MR jobs by hand at all, but develop your application using the Casca...
Can Retrofit with OKHttp use cache data when offline
...d();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.backend.com")
.client(httpClient)
.addConverterFactory(GsonConverterFactory.create())
.build();
backendApi = retrofit.create(BackendApi.class);
}
private static final Inte...
Create an enum with string values
...var foo: Options;
foo = "hello"; // Okay
foo = "asdf"; // Error!
More : https://www.typescriptlang.org/docs/handbook/advanced-types.html#string-literal-types
Legacy Support
Enums in TypeScript are number based.
You can use a class with static members though:
class E
{
static hello = "he...
Calling Java from Python
...
Pyjnius.
Docs: http://pyjnius.readthedocs.org/en/latest/
Github: https://github.com/kivy/pyjnius
From the github page:
A Python module to access Java classes as Python classes using JNI.
PyJNIus is a "Work In Progress".
Quick overview
>>> from jnius import autoclas...
How can I determine whether a 2D Point is within a Polygon?
...p.Y < minY || p.Y > maxY )
{
return false;
}
// https://wrf.ecse.rpi.edu/Research/Short_Notes/pnpoly.html
bool inside = false;
for ( int i = 0, j = polygon.Length - 1 ; i < polygon.Length ; j = i++ )
{
if ( ( polygon[ i ].Y > p.Y ) != ( polygon[ j...