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Eclipse - no Java (JRE) / (JDK) … no virtual machine
...eo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error:
34 Answers
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What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
...ge which opens a connection with the server.
The server and the client can now send each other messages when new data (on either side) is available.
Real-time traffic from the server to the client and from the client to the server
You'll want to use a server that has an event loop
With WebSockets ...
Providing a default value for an Optional in Swift?
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Update
Apple has now added a coalescing operator:
var unwrappedValue = optionalValue ?? defaultValue
The ternary operator is your friend in this case
var unwrappedValue = optionalValue ? optionalValue! : defaultValue
You could also pr...
Is MATLAB OOP slow or am I doing something wrong?
...nk the upshot of this is that:
MCOS/classdef methods are faster. Cost is now about on par with old style classes, as long as you use the foo(obj) syntax. So method speed is no longer a reason to stick with old style classes in most cases. (Kudos, MathWorks!)
Putting functions in namespaces makes t...
Running PostgreSQL in memory only
...a little easier with the advent of include_dir support in postgresql.conf; now you can just append one line, then write a generated config file for all the rest.
Faster testing with PostgreSQL
For more information about how to safely improve the performance of PostgreSQL for testing purposes, see ...
Standardize data columns in R
...)
EDIT 3 (2020): Thanks to @mj_whales: the old solution is deprecated and now we need to use mutate_at.
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How to establish a connection pool in JDBC?
...etAcquireIncrement(5);
cpds.setMaxPoolSize(20);
// The DataSource cpds is now a fully configured and usable pooled DataSource
But if you are running inside an application server, I would recommend to use the built-in connection pool it provides. In that case, you'll need to configure it (refer t...
How can I generate a list or array of sequential integers in Java?
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The API now requires code similar to this: ContiguousSet.create(Range.closed(1, count), DiscreteDomain.integers()
– Ben
Aug 3 '14 at 17:37
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Best way to store date/time in mongodb
... @Thilo: MongoDB has no special 'datetime' object as far as I know. It uses the JavaScript Date type, which is stored in BSON form.
– Niels van der Rest
Sep 24 '10 at 8:04
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Force update of an Android app when a new version is available
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@SepGH things have changed since, and Android now offers an API which you can use to force the user to upgrade and block him from continuing using the app if he doesn't upgrade to a minimum version: developer.android.com/guide/app-bundle/in-app-updates
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