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Why does SSL handshake give 'Could not generate DH keypair' exception?

...DHE_.... The later would happen if I added BouncyCastle. If TLS_ECDHE_ was selected, MOST OF the time it worked, but not ALWAYS, so adding even BouncyCastle provider was unreliable (failed with same error, every other time or so). I guess somewhere in the Sun SSL implementation sometimes it choose D...
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What's the right way to pass form element state to sibling/parent elements?

...ContextContainer = React.createContext(null); const initialAppState = { selected: "Nothing" }; function App() { // The app has a state variable and update handler const [appState, updateAppState] = useState(initialAppState); return ( <div> <h1>Passing state between c...
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What is the point of Lookup?

...in those assemblies IEnumerable<Type> allTypes = sampleTypes.Select(t => t.Assembly) .SelectMany(a => a.GetTypes()); // Grouped by namespace, but indexable ILookup<string, Type> lookup = allTypes.ToLookup(t =&g...
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Check if a string is null or empty in XSLT

... How can I translate <xsl:for-each select="root/*[matches(name(.), 'grp')]"> so it can be used in VS2010? – Si8 Oct 28 '15 at 17:21 ...
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How do I update my forked repo using SourceTree?

... First, set up the parent repo: Open your forked repo in SourceTree. Select Repository ➫ Repository Settings… in the menu (or press ⇧⌘,). In the Remotes pane, press Add. Enter any name you like (often upstream or master) and the URL / path to the parent repo. Press OK, then OK. Now, ...
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Open Cygwin at a specific folder

...nload it again and start setup again to run an update), make sure that you select the chere package under the "Shells" category. After Cygwin is launched, open up a Cygwin terminal (as an administrator) and type the command: chere -i -t mintty -s bash. Now you should have "Bash Prompt Here" in the...
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Disable validation of HTML5 form elements

...ecause it should absolutely work without JavaScript. In my case, I put a select element with 2 options (http:// or https://) before the URL input because I just need websites (and no ftp:// or other things). This way I avoid typing this weird prefix (the biggest regret of Tim Berners-Lee and maybe...
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What is the benefit of using “SET XACT_ABORT ON” in a stored procedure?

...h declare @error int, @message varchar(4000), @xstate int; select @error = ERROR_NUMBER(), @message = ERROR_MESSAGE(), @xstate = XACT_STATE(); if @xstate = -1 rollback; if @xstate = 1 and @trancount = 0 rollback if @xstate = 1 and @tran...
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Connect different Windows User in SQL Server Management Studio (2005 or later)

... use with the "runas" command. Then, in SQL Management Studio 2005, just select the "Windows Authentication" and input the server you wanna connect to (even though the user that you can see greyed out is still the local user)... and it works! Don't ask me why ! :) Edit: Make sure to include ":14...
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Getting exact error type in from DbValidationException

... string errorMessages = string.Join("; ", ex.EntityValidationErrors.SelectMany(x => x.ValidationErrors).Select(x => x.PropertyName + ": " + x.ErrorMessage)); throw new DbEntityValidationException(errorMessages); } } This will overwrite your context's SaveChanges() method a...