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java.net.UnknownHostException: Invalid hostname for server: local
...
Try the following :
String url = "http://www.google.com/search?q=java";
URL urlObj = (URL)new URL(url.trim());
HttpURLConnection httpConn =
(HttpURLConnection)urlObj.openConnection();
httpConn.setRequestMethod("GET");
Integer rescode = httpConn.getResponseCode();
S...
What's the difference between a POST and a PUT HTTP REQUEST?
...by browser when it knows it talks to a proxy and the final URI begins with https://. The intent of CONNECT is to allow end-to-end encrypted TLS session, so the data is unreadable to a proxy.
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Change R default library path using .libPaths in Rprofile.site fails to work
...rocess can be read at ?Startup help page and there is RStudio material at: https://support.rstudio.com/hc/en-us/articles/200549016-Customizing-RStudio
In your case it appears that RStudio is not respecting the Rprofile.site settings or perhaps is overriding them by reading an .Rprofile setting from...
How do I declare an array of weak references in Swift?
...2.2 (swiftlang-703.0.18.1 clang-703.0.29).
Code can be grabbed from Gist.
https://gist.github.com/codelynx/30d3c42a833321f17d39
** ADDED IN NOV.2017
I updated the code to Swift 4
// Swift 4, Xcode Version 9.1 (9B55)
class WeakObject<T: AnyObject>: Equatable, Hashable {
weak var object...
The application was unable to start correctly (0xc000007b)
...e-Install
Need to Run the application as an administrator
Source: http://www.solveinweb.com/solved-the-application-was-unable-to-start-correctly-0xc000007b-click-ok-to-close-the-application/
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Which UUID version to use?
...ashing a URL you would use NAMESPACE_URL:
uuid.uuid3(uuid.NAMESPACE_URL, 'https://ripple.com')
Please note that this UUID will be different than the v5 UUID for the same URL, which is generated like this:
uuid.uuid5(uuid.NAMESPACE_URL, 'https://ripple.com')
A nice property of v3 and v5 URLs is t...
What is boilerplate code?
...
On the etymology the term boilerplate: from http://www.takeourword.com/Issue009.html...
Interestingly, the term arose from the newspaper business. Columns
and other pieces that were syndicated were sent out to subscribing
newspapers in the form of a mat (i.e. a matr...
社会化海量数据采集爬虫框架搭建 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...网络请求
GetMethod method = new GetMethod("http://www.baidu.com" );
int statusCode = httpClient.executeMethod(method);
if (statusCode == HttpStatus. SC_OK) {
content = method.getResponseBodyAsString();
...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...me work done on the postgresql JDBC Driver, related to this behaviour:
see https://github.com/pgjdbc/pgjdbc/pull/477
It is now possible, by setting autosave=always in the connection (see https://jdbc.postgresql.org/documentation/head/connect.html) to avoid the 'current transaction is aborted' synd...
How to generate a Dockerfile from an image?
...d export Dockerfile. Parameter -sV=1.36 is not always required.
Reference: https://hub.docker.com/repository/docker/alpine/dfimage
below is the old answer, it doesn't work any more.
$ docker pull centurylink/dockerfile-from-image
$ alias dfimage="docker run -v /var/run/docker.sock:/var/run/docker.so...