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Kill a postgresql session/connection
... pg_stat_activity
WHERE
-- don't kill my own connection!
pid <> pg_backend_pid()
-- don't kill the connections to other databases
AND datname = 'database_name'
;
Before executing this query, you have to REVOKE the CONNECT privileges to avoid new connections:
REVOKE ...
How to escape braces (curly brackets) in a format string in .NET
...nd String.Format
string localVar = "dynamic";
string templateString = $@"<h2>{0}</h2><div>this is my {localVar} template using a {{{{custom tag}}}}</div>";
string result = string.Format(templateString, "String Interpolation");
// OUTPUT: <h2>String Interpolation</h...
Most efficient method to groupby on an array of objects
...one else needs it, here's the TypeScript signature: var groupBy = function<TItem>(xs: TItem[], key: string) : {[key: string]: TItem[]} { ...
– Michael Sandino
Dec 7 '17 at 9:47
...
How can I get the current page name in WordPress?
...parsed, so it is available at any point inside your templates for pages.
Although it doesn't appear to be documented, the $pagename var is only set if you use permalinks. I guess this is because if you don't use them, WordPress doesn't need the page slug, so it doesn't set it up.
$pagename is not ...
FirstOrDefault: Default value other than null
As I understand it, in Linq the method FirstOrDefault() can return a Default value of something other than null. What I haven't worked out is what kind of things other than null can be returned by this (and similar) method when there are no items in the query result. Is there any particular wa...
'System.Net.Http.HttpContent' does not contain a definition for 'ReadAsAsync' and no extension metho
...ou have installed the correct NuGet package in your console application:
<package id="Microsoft.AspNet.WebApi.Client" version="4.0.20710.0" />
and that you are targeting at least .NET 4.0.
This being said, your GetAllFoos function is defined to return an IEnumerable<Prospect> whereas...
When to use dynamic vs. static libraries
... called -- and can be shared among components that use the same library (multiple data loads, one code load).
Dynamic libraries were considered to be the better approach most of the time, but originally they had a major flaw (google DLL hell), which has all but been eliminated by more recent Window...
Do while loop in SQL Server 2008
...mple of WHILE Loop
DECLARE @intFlag INT
SET @intFlag = 1
WHILE (@intFlag <=5)
BEGIN
PRINT @intFlag
SET @intFlag = @intFlag + 1
END
GO
ResultSet:
1
2
3
4
5
Example of WHILE Loop with BREAK keyword
DECLARE @intFlag INT
SET @intFlag = 1
WHILE (@intFlag <=5)
BEGIN
PRINT @in...
Value of type 'T' cannot be converted to
...ks! I am guessing the second like should also be T newT2 = (T)(object)t; although that's a no op.
– Alex
Nov 3 '10 at 22:59
...
Get all inherited classes of an abstract class [duplicate]
...tor
{
static ReflectiveEnumerator() { }
public static IEnumerable<T> GetEnumerableOfType<T>(params object[] constructorArgs) where T : class, IComparable<T>
{
List<T> objects = new List<T>();
foreach (Type type in
Assembly.GetAs...