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Different types of thread-safe Sets in Java
...only some of them.
Obviously you can use this only if you have some total order on your elements.
This looks like an ideal candidate for high-concurrency situations, for not-too-large sets (because of the O(log n)).
4) For the ConcurrentHashMap (and the Set derived from it): Here most basic option...
Loop inside React JSX
...
+1. I'm even using this with a ul (unordered list). <ul> {objects.map((object:string,i:number)=>{ return <li>{object}</li> })} </ul> using TypeScript
– Roberto C Navarro
...
When to use Common Table Expression (CTE)
...erenced more than once. select top 100 * into #tmp from master..spt_values order by 1,2,3,4 select A.number, COUNT(*) from #tmp A inner join #tmp B ON A.number = B.number+1 group by A.number vs with CTE AS (select top 100 * from master..spt_values order by 1,2,3,4) select A.number, COUNT(*) from CT...
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
...been removed in php version 7.
Check $result before passing it to mysql_fetch_array. You'll find that it's false because the query failed. See the mysql_query documentation for possible return values and suggestions for how to deal with them.
$username = mysql_real_escape_string($_POST['username'...
Why not be dependently typed?
...s due to the fact that dependent types are fundamentally hard (e.g., first-order logic is undecidable). But I think the bigger problem is really that we lack a good vocabulary for capturing and explaining what's going on. As more and more people learn about dependent types, we'll develop a better vo...
F# changes to OCaml [closed]
...ing themselves to the subset that F# supports and porting it back to F# in order to benefit from OCaml's superior tool support!
– J D
Aug 29 '10 at 16:28
8
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Progress indicator during pandas operations
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yep - you will have order(number of groups), so depending on what your bottleneck is this might make a difference
– Jeff
Sep 4 '13 at 1:27
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Combining INSERT INTO and WITH/CTE
... CTE will return exactly four fields and that those fields are matching in order and type with those specified in the INSERT statement.
If that is not the case, just replace the "SELECT *" with a specific select of the fields that you require.
As for your question on using a function, I would say "...
/etc/apt/sources.list" E212: Can't open file for writing
...
change user to root
sodu su -
browse to etc
vi sudoers
look for root user in user priviledge section. you will get it like
root ALL=(ALL:ALL) ALL
make same entry for your user name. if you username is 'myuser' then add
myuser ALL=(ALL:ALL) ALL
it will lo...
Convert Rows to columns using 'Pivot' in SQL Server
... from yt
group by Week
order by Week
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = 'SELECT store,' + @cols + ' from
(
select store, week, xCount
...