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Socket.IO - how do I get a list of connected sockets/clients?
...tion that returns the sockets for a given room.
function findClientsSocketByRoomId(roomId) {
var res = []
, room = io.sockets.adapter.rooms[roomId];
if (room) {
for (var id in room) {
res.push(io.sockets.adapter.nsp.connected[id]);
}
}
return res;
}
Socket.io 0.7
API for no namespace...
How to choose the id generation strategy when using JPA and Hibernate
...generate identifiers of type long, short or int, given a table and column (by default hibernate_unique_key and next_hi respectively) as a source of hi values. The hi/lo algorithm generates identifiers that are unique only for a particular database.
seqhilo
uses a hi/lo algorithm to efficiently gener...
Using IQueryable with Linq
...es (which is what Enumerable uses).
The expression trees can be inspected by your chosen LINQ provider and turned into an actual query - although that is a black art in itself.
This is really down to the ElementType, Expression and Provider - but in reality you rarely need to care about this as a ...
How to detect if a stored procedure already exists
... name for different types but it could happen
– workabyte
Aug 25 '14 at 14:08
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How to hide soft keyboard on android after clicking outside EditText?
...id="@+id/parent"> ... </RelativeLayout>
and call setupUI(findViewById(R.id.parent)), that is all.
If you want to use this effectively, you may create an extended Activity and put this method in, and make all other activities in your application extend this activity and call its setupUI() ...
Understanding Spring @Autowired usage
...
TL;DR
The @Autowired annotation spares you the need to do the wiring by yourself in the XML file (or any other way) and just finds for you what needs to be injected where, and does that for you.
Full explanation
The @Autowired annotation allows you to skip configurations elsewhere of what to...
There can be only one auto column
...intentionally supported, with the auto column being the primary key purely by convention (and for simplicity).
– Matthew Read
Mar 15 '19 at 3:52
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Best practices for in-app database migration for Sqlite
...ertable.html. For deleting columns or other changes that aren't supported by the "ALTER TABLE" syntax, I create a new table, migrate date into it, drop the old table, and rename the new table to the original name.
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Extracting an attribute value with beautifulsoup
...above code work in this case? I thought you would have to access the value by doing output = inputTag[0].contents
– Seth
Apr 11 '10 at 23:31
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C# Sort and OrderBy comparison
I can sort a list using Sort or OrderBy. Which one is faster? Are both working on same
algorithm?
7 Answers
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