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Why should C++ programmers minimize use of 'new'?
...omposes. It scales.
If you use the Line class as a building block:
class Table
{
Line borders[4];
};
Then
int main ()
{
Table table;
}
allocates four std::string instances, four Line instances, one Table instance and all the string's contents and everything is freed automagically...
Java: Detect duplicates in ArrayList?
...anding your question correctly, you have a 2d array of Block, as in
Block table[][];
and you want to detect if any row of them has duplicates?
In that case, I could do the following, assuming that Block implements "equals" and "hashCode" correctly:
for (Block[] row : table) {
Set set = new Ha...
Combining “LIKE” and “IN” for SQL Server [duplicate]
...y, the IN statement creates a series of OR statements... so
SELECT * FROM table WHERE column IN (1, 2, 3)
Is effectively
SELECT * FROM table WHERE column = 1 OR column = 2 OR column = 3
And sadly, that is the route you'll have to take with your LIKE statements
SELECT * FROM table
WHERE column...
When to use Hadoop, HBase, Hive and Pig?
.... It's a distributed, scalable, big data store, modelled after Google's BigTable. It stores data as key/value pairs.
Coming to Hive. It provides us data warehousing facilities on top of an existing Hadoop cluster. Along with that it provides an SQL like interface which makes your work easier, in ca...
Compute a confidence interval from sample data
... Careful with the "private" use of sp.stats.t._ppf. I'm not that comfortable with that in there without further explanation. Better to use sp.stats.t.ppf directly, unless you are sure you know what you are doing. On quick inspection of the source there is a fair amount of code skipped with _pp...
Find a pair of elements from an array whose sum equals a given number
...r=[1,2,1,2,1,2,1,...]. For uniqueness by value, it seems like another hash table keyed by a value-pair would do the trick. Still a nice, compact, elegant answer. +1
– William
Feb 10 '11 at 18:49
...
Is there a way to disable initial sorting for jquery DataTables?
I'm using the jquery DataTables plugin. From their documentation:
4 Answers
4
...
Export to CSV via PHP
... // return you own sql
$sql = "SELECT id, date, params, value FROM sometable ORDER BY date;";
return $sql;
}
function getExportData()
{
$values = array();
$sql = $this->getSql();
if (strlen($sql) > 0)
{
$result = dbquery($sql); // opens the database and execut...
HashSet vs. List performance
...lly a collection in the .NET framework that switches between a list and hastable implementation depending on the number of items it contains: HybridDictionary.
– MgSam
Nov 1 '13 at 2:12
...
Thread context switch Vs. process context switch
...?t=46m8s (watch from the beginning to know more about Virtual Memory, page tables and TLB).
– piotrwest
Jun 24 '16 at 23:05
...