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How long does it take for GitHub page to show changes after changing index.html
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Github pages are cached with CDN. As explained by JoelGlovier in comments, you can still have the latest version of your pages by appending a version in the query string such as https://username.github.io/awesome-repo/?version=f36af92 so that you won't get a cached versio...
How to avoid null checking in Java?
... statement throws an Error (AssertionError) if the condition is not true. By default, Java ignores assertions. You can enable assertions by passing the option -ea to the JVM. You can enable and disable assertions for individual classes and packages. This means that you can validate code with the...
How do I modify fields inside the new PostgreSQL JSON datatype?
...tion$;
Updated: Added function for replacing an existing json field's key by another given key. Can be in handy for updating data types in migrations or other scenarios like data structure amending.
CREATE OR REPLACE FUNCTION json_object_replace_key(
json_value json,
existing_key text,
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Connect to a heroku database with pgadmin
I would like to manage my heroku database with pgadmin client. By now, I've been doing this with psql .
When I use data from heroku pg:credentials to connect de DB using pgadmin , I obtain:
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Template default arguments
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@Pubby I suppose it would create some unnecessary complications if Foo might be a template identifier or might be an explicit instantiation depending on whether there's a default argument. Better keep the explicit instantiation s...
How to find all duplicate from a List? [duplicate]
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In .NET framework 3.5 and above you can use Enumerable.GroupBy which returns an enumerable of enumerables of duplicate keys, and then filter out any of the enumerables that have a Count of <=1, then select their keys to get back down to a single enumerable:
var duplicateKeys = lis...
What happens to my apps after my developer account membership expires? [closed]
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Since apps can now be downloaded in the App Store by existing users even though they are not for sale anymore (e.g. Flappy Bird): Will users who already paid for an app be still able to download it on the "Past Purchases"(?) page?
– lxgr
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Difference between abstract class and interface in Python
...Creating an Abstract Base Class
We can create our own Abstract Base Class by setting the metaclass to abc.ABCMeta and using the abc.abstractmethod decorator on relevant methods. The metaclass will be add the decorated functions to the __abstractmethods__ attribute, preventing instantiation until th...
What is the correct value for the disabled attribute?
... markup.
For HTML5, <input type="text" disabled /> is valid and used by W3C on their samples.
In fact, both ways works on all major browsers.
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Batch Renaming of Files in a Directory
...tion and is also used as a formatting operator. But usually it is followed by the s or f to specify the format. Why is nothing (space) immediately after % in the said command?
– Shashank Sawant
Apr 5 '14 at 22:32
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