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What does the question mark in Java generics' type parameter mean?
...eloping in Java for about 4 years, but have never had a very strong understanding of what this style of code is supposed to indicate.
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Getting the difference between two sets
... This solution is not fully correct. Because the order of test1 and test2 makes a difference.
– Bojan Petkovic
Nov 1 '16 at 22:34
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Underscore prefix for property and method names in JavaScript
...by convention but are still public.
This syntax tries to be both terse and intuitive, although it's rather different from other programming languages.
Why was the sigil # chosen, among all the Unicode code points?
@ was the initial favorite, but it was taken by decorators. TC39 con...
What are free monads?
I've seen the term Free Monad pop up every now and then for some time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of cat...
git: Show index diff in commit message as comment
...nows to ignore them as though they are comments.
– Brandon Rhodes
Mar 25 '12 at 11:21
@BrandonRhodes How to tell git b...
Binding IIS Express to an IP Address [duplicate]
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that was it. Copied the applicationhost.config and modified the binding to <bindings> <binding protocol="http" bindingInformation=":8080:<ip address>" /> </bindings>
– jdiaz
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Create a new Ruby on Rails application using MySQL instead of SQLite
...rails project, change the adapter in the config/database.yml file to mysql and make sure you specify a valid username and password, and optionally, a socket:
development:
adapter: mysql2
database: db_name_dev
username: koploper
password:
host: localhost
socket: /tmp/mysql.sock
Next, m...
jQuery validate: How to add a rule for regular expression validation?
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this is super useful and should be included in jquery :(
– Grahame A
Aug 5 '11 at 19:47
3
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Difference between “@id/” and “@+id/” in Android
In @+id/ the plus symbol + instructs to create a new resource name and add in to the R.java file but what about @id/ ? From the documentation of ID : when referencing an Android resource ID , you do not need the plus symbol, but must add the android package namespace, like so:
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When do you use POST and when do you use GET?
...or destructive actions such as creation (I'm aware of the irony), editing, and deletion, because you can't hit a POST action in the address bar of your browser. Use GET when it's safe to allow a person to call an action. So a URL like:
http://myblog.org/admin/posts/delete/357
Should bring you to ...