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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
...y. For example, you may have executed "select for update" and have not yet committed/rollbacked and fired another select query. Do a commit/rollback before executing your query.
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How to show particular image as thumbnail while implementing share on Facebook?
...ng:
<link rel="image_src"
type="image/jpeg"
href="http://www.domain.com/path/icon-facebook.gif" />
The name of the image must be the same as in the example.
Click "Making Sure the Preview Works"
Note: Tags can be correct but Facebook only scrapes every 24 hours, according to...
How can I solve a connection pool problem between ASP.NET and SQL Server?
...ts Close method. You'll leak a connection using this code for example:
var command = new OleDbCommand(someUpdateQuery, getConnection());
result = command.ExecuteNonQuery();
connection().Close();
The connection returned from the first call to getConnection() is not being closed. Instead of closing...
Delete directory with files in it?
...oo. Its mainly useful for explode()ing a path taken from the OS. alanhogan.com/tips/php/directory-separator-not-necessary
– ReactiveRaven
Jul 16 '12 at 23:47
...
submitting a GET form with query string params and hidden params disappear
...t what hidden parameters are for to start with...?
<form action="http://www.example.com" method="GET">
<input type="hidden" name="a" value="1" />
<input type="hidden" name="b" value="2" />
<input type="hidden" name="c" value="3" />
<input type="submit" />
&l...
Check if a temporary table exists and delete if it exists before creating a temporary table
...pdb..#Results') IS NOT NULL DROP TABLE #Results
GO
CREATE TABLE #Results ( Company CHAR(3), StepId TINYINT, FieldId TINYINT )
GO
select company, stepid, fieldid from #Results
GO
ALTER TABLE #Results ADD foo VARCHAR(50) NULL
GO
select company, stepid, fieldid, foo from #Results
GO
IF OBJECT_ID('tempd...
How can I write output from a unit test?
...means that the string is a formatting string (documented at docs.microsoft.com/en-us/dotnet/standard/base-types/…). To use a literal { in a string, you need to double it. To print your string use WriteLine("he{{ll}}o");
– Walter
Nov 7 '17 at 21:59
...
How to implement an abstract class in ruby?
...ified the code a bit, to use extend instead of include, due to: yehudakatz.com/2009/11/12/better-ruby-idioms
– Magne
Dec 2 '17 at 15:38
...
Can iterators be reset in Python?
...the other hand is perfectly suitable, as long as the list of dicts can fit comfortably in memory. A new "iterator from the start" (very lightweight and low-overhead) can be made at any time with iter(L), and used in part or in whole without affecting new or existing ones; other access patterns are ...
Convert Data URI to File then append to FormData
...:
function dataURItoBlob(dataURI) {
// convert base64/URLEncoded data component to raw binary data held in a string
var byteString;
if (dataURI.split(',')[0].indexOf('base64') >= 0)
byteString = atob(dataURI.split(',')[1]);
else
byteString = unescape(dataURI.split...