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How to specify the default error page in web.xml?
I am using <error-page> element in web.xml to specify the friendly error page when user encounters a certain error such as error with code of 404:
...
Can you create nested WITH clauses for Common Table Expressions?
...recursive query:
WITH y
AS
(
SELECT x, y, z
FROM MyTable
WHERE [base_condition]
UNION ALL
SELECT x, y, z
FROM MyTable M
INNER JOIN y ON M.[some_other_condition] = y.[some_other_condition]
)
SELECT *
FROM y
You may not need this functionality. I've done the following just to organ...
Is it .yaml or .yml?
...ioned factors may have been the main ones; nevertheless, all the factors (known or unknown) have resulted in the abbreviated, three (3) character extension becoming the one in predominant use for YAML—despite the inventors' preference.
".YML" seems to be the de facto standard. Yet the same invent...
Compression/Decompression string with C#
...r1);
}
Remember that Zip returns a byte[], while Unzip returns a string. If you want a string from Zip you can Base64 encode it (for example by using Convert.ToBase64String(r1)) (the result of Zip is VERY binary! It isn't something you can print to the screen or write directly in an XML)
The vers...
What does passport.session() middleware do?
...hilst the other answers make some good points I thought that some more specific detail could be provided.
app.use(passport.session());
is equivalent to
app.use(passport.authenticate('session'));
Where 'session' refers to the following strategy that is bundled with passportJS.
https://github....
NSObject +load and +initialize - What do they do?
...able file, the runtime sends the load message very early in the process's lifetime. For classes that are in a shared (dynamically-loaded) library, the runtime sends the load message just after the shared library is loaded into the process's address space.
Furthermore, the runtime only sends load t...
Fastest way to iterate over all the chars in a String
...tarting from Java 9, the solution as described won't work anymore, because now Java will store strings as byte[] by default.
SECOND UPDATE: As of 2016-10-25, on my AMDx64 8core and source 1.8, there is no difference between using 'charAt' and field access. It appears that the jvm is sufficiently opt...
Bootstrap 3 offset on right not left
In regards to BS 3 if I wanted just a narrow column of content on the right I might use an offset class of 9 and a column of 3.
...
What does enctype='multipart/form-data' mean?
... then you need to start worrying about the format. You might also want to know about it for interest's sake.
application/x-www-form-urlencoded is more or less the same as a query string on the end of the URL.
multipart/form-data is significantly more complicated but it allows entire files to be i...
Booleans, conditional operators and autoboxing
...
The difference is that the explicit type of the returnsNull() method affects the static typing of the expressions at compile time:
E1: `true ? returnsNull() : false` - boolean (auto-unboxing 2nd operand to boolean)
E2: `true ? n...