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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...
Using varchar(MAX) vs TEXT on SQL Server
...es ('b')
insert into @table values ('c')
insert into @table values ('d')
select *
from @table
where a ='a'
This give an error:
The data types text and varchar are incompatible in the equal to operator.
Wheras this does not:
declare @table table (a varchar(max))
Interestingly, LIKE still wo...
How to check status of PostgreSQL server Mac OS X
...using psql to run a simple query and checking the exit code, e.g. psql -c 'SELECT 1', or use pg_isready to check the connection status.
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Is using Random and OrderBy a good shuffle algorithm?
...e naive version). Durstenfeld/Knuth achieve O(n) not by assignment, but by selection from a decreasing set and swapping. This way the random number selected may repeat and the algorithm only takes O(n).
– tvanfosson
Aug 17 '09 at 12:18
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Capybara Ambiguity Resolution
...t
So it's adviced to choose another, less ambiguous locator: for example select element by id, class or other css/xpath locator so that only one element will match it.
As a note here are some locators that I usually consider useful when resolving ambiguity:
find('ul > li:first-child')
It'...
Can you use hash navigation without affecting history?
...
Unless you use :target selectors ... then history functions are useless, as that part of the spec (css interaction with history ops) seems to be not defined currently, and style does not get recomputed on history replace by most/all browsers.
...
XDocument or XmlDocument
...er>
XElement customersElement = new XElement("customers",
customers.Select(c => new XElement("customer",
new XAttribute("name", c.Name),
new XAttribute("lastSeen", c.LastOrder)
new XElement("address",
new XAttribute("town", c.Town),
new XAttr...
Getting “CHECKOUT can only be performed on a version resource” when trying to commit using Eclipse s
...om my project (by right clicking on the project from the package explorer, selecting "Team" -> "Commit"), I get the error:
...
“Diff” an image using ImageMagick
...th layers, 3) remove alpha channels from both layers in the Layers tab, 4) select the G + B channels on one layer, select all and clear the channels with black color, the same with the R + B channels on the second layer, 4) set Screen mode for the upper layer in the Layers tab.
...
How to ignore files/directories in TFS for avoiding them to go to central source repository?
...ol Explorer. This launches a small wizard, and on one of the steps you can select items to exclude (although, I think you have to add at least one item to TFS with this method for the wizard to let you continue).
You can even add a forbidden patterns check-in policy (under Team -> Team Project S...