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What is the optimal algorithm for the game 2048?
...vidual rows and columns. A single row or column is a 16-bit quantity, so a table of size 65536 can encode transformations which operate on a single row or column. For example, moves are implemented as 4 lookups into a precomputed "move effect table" which describes how each move affects a single row...
Permanently Set Postgresql Schema Path
... set schema path in Postgres so that I don't every time specify schema dot table e.g. schema2.table .
Set schema path:
3 ...
Decompressing GZip Stream from HTTPClient Response
...w HttpClient();
HttpResponseMessage response;
DataSet dsTable = new DataSet();
try
{
//Gets the headers that should be sent with each request
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"))...
What does “exec sp_reset_connection” mean in Sql Server Profiler? [duplicate]
...llocated memory
owned by the connection
Clears any work or temporary
tables that are created by the
connection
Kills all global cursors owned by the
connection
Closes any open SQL-XML handles that are open
Deletes any open SQL-XML related work tables
Closes all system tables
Clo...
What is the difference between memoization and dynamic programming?
...g all related sub-problems first, typically by filling up an n-dimensional table. Based on the results in the table, the solution to the "top" / original problem is then computed.
If you use memoization to solve the problem you do it by maintaining a map of already solved sub problems. You do it "t...
Oracle Differences between NVL and Coalesce
...n search contains comparison of nvl result with an indexed column.
create table tt(a, b) as
select level, mod(level,10)
from dual
connect by level<=1e4;
alter table tt add constraint ix_tt_a primary key(a);
create index ix_tt_b on tt(b);
explain plan for
select * from tt
where a=nvl(:1,a)
an...
psycopg2: insert multiple rows with one query
...("(%s,%s,%s,%s,%s,%s,%s,%s,%s)", x) for x in tup)
cur.execute("INSERT INTO table VALUES " + args_str)
and 2 minutes when using this method:
cur.executemany("INSERT INTO table VALUES(%s,%s,%s,%s,%s,%s,%s,%s,%s)", tup)
sh...
PadLeft function in T-SQL
I have the following table A:
17 Answers
17
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How to check if object (variable) is defined in R?
...paces of attached packages, this would also fall short:
> exists("data.table")
[1] FALSE
require(data.table)
> exists("data.table", inherits = FALSE)
[1] FALSE
> exists("data.table")
[1] TRUE
The only thing I can think of to get around this -- to search in attached packages but not in ba...
How to work around the stricter Java 8 Javadoc when using Maven
...
Note that for the error no summary or caption for table, using <table summary=""> won't work anymore. If that's your situation, add a <caption> element to your table, like this:
<table>
<caption>Examples</caption>
...
</table>
H...