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How does autowiring work in Spring?
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First, and most important - all Spring beans are managed - they "live" inside a container, called "application context".
Second, each application has an entry point to that context. Web applications have a Servlet, JSF uses a el-resolver, etc. Also, th...
How to prevent Node.js from exiting while waiting for a callback?
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Callback is Not Queued
Node runs until all event queues are empty. A callback is added to an event queue when a call such as
emmiter1.on('this_event',callback).
has executed. This call is part of the code written by th...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
... iPhone apps with using XCode 4.
I now have a new Macintosh with a new install of... everything.
16 Answers
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Does MySQL ignore null values on unique constraints?
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Yes, MySQL allows multiple NULLs in a column with a unique constraint.
CREATE TABLE table1 (x INT NULL UNIQUE);
INSERT table1 VALUES (1);
INSERT table1 VALUES (1); -- Duplicate entry '1' for key 'x'
INSERT table1 VALUES (NULL);
INSER...
Search for a string in Enum and return the Enum
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@user1531040 Actually, there is an Enum.TryParse.
– DarLom
Nov 1 '17 at 21:14
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How does this print “hello world”?
... 6 symbols
apart from letters. With this codification scheme you can have all 26 (one case) english letters and 6 symbols (being space among them).
Algorithm description
The >>= 5 in the for-loop jumps from group to group, then the 5-bits group gets isolated ANDing the number with the mask ...
AngularJS : Clear $watch
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$watch returns a deregistration function. Calling it would deregister the $watcher.
var listener = $scope.$watch("quartz", function () {});
// ...
listener(); // Would clear the watch
share
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How to get access to HTTP header information in Spring MVC REST controller?
I am new to web programming in general, especially in Java, so I just learned what a header and body is.
3 Answers
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Will Google Android ever support .NET? [closed]
... wondering, has there been any talk with Google to make this easier to install? Perhaps put it up as a free download from the Market? Allow .Net apps to be put on the market?
– csauve
Jun 2 '10 at 16:58
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How to disable a particular checkstyle rule for a particular line of code?
... <property name="checkFormat" value="$1"/>
</module>
which allows you to turn off specific checks for specific lines of code:
//CHECKSTYLE.OFF: IllegalCatch - Much more readable than catching 7 exceptions
catch (Exception e)
//CHECKSTYLE.ON: IllegalCatch
*Note: you'll also have to...