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Generate random numbers using C++11 random library
...;
}
};
thread_local backoff_time_t backoff_time;
int main(int argc, char** argv) {
double x1 = backoff_time.rand();
double x2 = backoff_time.rand();
double x3 = backoff_time.rand();
double x4 = backoff_time.rand();
return 0;
}
~
...
Possible to iterate backwards through a foreach?
...inq can help you.
A Linq extension method using anonymous types with Linq Select to provide a sorting key for Linq OrderByDescending;
public static IEnumerable<T> Invert<T>(this IEnumerable<T> source)
{
var transform = source.Select(
(o, i) => new
...
Missing file warnings showing up after upgrade to Xcode 4
...Code 4.2.+ (possibly in 4+) you can avoid manual work and command line :
Select project Project Navigator (Command - 1)
Choose File - Source Control - Commit menu
In the left pane, on top of it you have three icons, select the middle one - File view
You will see the list of all missing files
Selec...
textarea's rows, and cols attribute in CSS
...you use "em" rather than "px" then you can specify the width and height in characters as you would with 'rows' and 'cols' attributes. Even works with IE6 I believe.
– Swanny
Feb 11 '14 at 21:36
...
When to use single quotes, double quotes, and backticks in MySQL
...ng query will produce different results (or errors) depending on SQL mode:
SELECT "column" FROM table WHERE foo = "bar"
ANSI_QUOTES disabled
The query will select the string literal "column" where column foo is equal to string "bar"
ANSI_QUOTES enabled
The query will select the column column where ...
Local and global temporary tables in SQL Server
...varchar(150)
)
GO
insert into #LocalTemp values ( 1, 'Name','Address');
GO
Select * from #LocalTemp
The scope of Local temp table exist to the current session of current
user means to the current query window. If you will close the current
query window or open a new query window and will tr...
Populate data table from data reader
... conn = new SqlConnection(connString);
string query = "SELECT * FROM Customers";
SqlCommand cmd = new SqlCommand(query, conn);
conn.Open();
SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
DataTable dtSchema = ...
What are the differences between 'call-template' and 'apply-templates' in XSL?
...ower of XSLT: It takes any number of XML nodes (whatever you define in the select attribute), iterates them (this is important: apply-templates works like a loop!) and finds matching templates for them:
<!-- sample XML snippet -->
<xml>
<foo /><bar /><baz />
</xml...
Aggregate function in an SQL update query?
...
UPDATE t1
SET t1.field1 = t2.field2Sum
FROM table1 t1
INNER JOIN (select field3, sum(field2) as field2Sum
from table2
group by field3) as t2
on t2.field3 = t1.field3
share
|
improve...
Python: Tuples/dictionaries as keys, select, sort
...d like to organize them in a data structure in Python that allows for easy selection and sorting. My idea was to put them into a dictionary with tuples as keys, e.g.,
...