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Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...eplacement table foo, then the blocked transaction will finally receive an error rather than finding the new foo table. (Edit: this was fixed in or before PostgreSQL 9.3)
CREATE INDEX ... CONCURRENTLY is exceptional, it uses three transactions to add an index to a table while allowing concurrent up...
How to add parameters to a HTTP GET request in Android?
...ic void whenSuccess(ResponseHendler<YourResponseType> rh){
LOGGER.error("Status code: " + rh.getStatusCode() + ", Error msg: " + rh.getErrorText());
}
Note: There are many useful methods to manipulate your response.
...
Is there a way to detect if a browser window is not currently active?
I have JavaScript that is doing activity periodically. When the user is not looking at the site (i.e., the window or tab does not have focus), it'd be nice to not run.
...
Why is there no SortedList in Java?
In Java there are the SortedSet and SortedMap interfaces. Both belong to the Java Collections framework and provide a sorted way to access the elements.
...
Non-CRUD operations in a RESTful service
What is the "RESTful" way of adding non-CRUD operations to a RESTful service? Say I have a service that allows CRUD access to records like this:
...
Responsive css background images
...e.
– Andrei Volgin
Sep 27 '12 at 22:05
2
You can use a much smaller image if you use a vector for...
How to use WPF Background Worker
...WriteLine("Operation Cancelled");
}
else if (e.Error != null)
{
Console.WriteLine("Error in Process :" + e.Error);
}
else
{
Console.WriteLine("Operation Completed :" + e.Result); ...
Switch statement for string matching in JavaScript
...lt. When the match fails, the function returns null. To avoid an exception error we will add the || conditional operator before accessing the first array element and test against the input property that is a static property of regular expressions that contains the input string.
str = 'XYZ test';
sw...
How to run a class from Jar which is not the Main-Class in its Manifest file
...pring-boot:repackage, the above "-cp" method won't work. You will get:
Error: Could not find or load main class your.alternative.class.path
even if you can see the class in the JAR by jar tvf yours.jar.
In this case, run your alternative class by the following command:
java -cp yours.jar -Dl...
What's the shebang/hashbang (#!) in Facebook and new Twitter URLs for?
... JS.
– Roman Royter
Mar 29 '11 at 4:05
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