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Check if Internet Connection Exists with Javascript? [duplicate]

How do you check if there is an internet connection using Javascript? That way I could have some conditionals saying "use the google cached version of JQuery during production, use either that or a local version during development, depending on the internet connection". ...
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Favourite performance tuning tricks [closed]

...ode that made fantastic improvements in performance: http://geekswithblogs.net/Rhames/archive/2008/10/28/calculating-running-totals-in-sql-server-2005---the-optimal.aspx share | improve this answer ...
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In C#, should I use string.Empty or String.Empty or “” to intitialize a string?

...a copy of the content: web.archive.org/web/20131230161806/http://kossovsky.net/… – ygoe Feb 13 '15 at 15:37 add a comment  |  ...
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How do ports work with IPv6?

...about is addressing :) But the reason it concerns/confuses people is that networking design treats "addressing" as addresses and "services" as port numbers. But you can't do anything in TCP or UDP without both, so most people are trying to get the socket-level addressing to work, and can't understa...
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To prevent a memory leak, the JDBC Driver has been forcibly unregistered

... It works! javabeat.net/servletcontextlistener-example may help to implement servlet context listener – Vadim Zin4uk Dec 4 '13 at 12:44 ...
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Can Retrofit with OKHttp use cache data when offline

...nse originalResponse = chain.proceed(chain.request()); if (Utils.isNetworkAvailable(context)) { int maxAge = 60; // read from cache for 1 minute return originalResponse.newBuilder() .header("Cache-Control", "public, max-age=" + maxAge) ...
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Get query from java.sql.PreparedStatement [duplicate]

...putStream; import java.io.Reader; import java.math.BigDecimal; import java.net.URL; import java.sql.Array; import java.sql.Blob; import java.sql.Clob; import java.sql.Connection; import java.sql.Date; import java.sql.NClob; import java.sql.ParameterMetaData; import java.sql.PreparedStatement; import...
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Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height

...ebkit-line-clamp which has poor browser support. See live demo on jsfiddle.net/AdrienBe/jthu55v7/ Many people went to great efforts in order to make this happen using CSS only. See articles and questions about it: css-tricks.com/line-clampin : 5 stars article on line camplin mobify.com/blog/mult...
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Increasing the timeout value in a WCF service

... binding elemnent. <system.serviceModel> <bindings> <netTcpBinding> <binding name="longTimeoutBinding" receiveTimeout="00:10:00" sendTimeout="00:10:00"> <security mode="None"/> </binding> </netTcpBinding> </binding...
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How to find out which fonts are referenced and which are embedded in a PDF document

... using the free iText (or iTextSharp if you're on .NET) you can write a utility that will extract for you this information using the BaseFont.GetDocumentFonts method. Read this link for the code shar...