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System.Threading.Timer in C# it seems to be not working. It runs very fast every 3 second
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source.Cancel();
//or
token.ThrowIfCancellationRequested(); // try/ catch block requred.
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Difference between numpy.array shape (R, 1) and (R,)
...Py arrays is that they consist of two parts, a data buffer which is just a block of raw elements, and a view which describes how to interpret the data buffer.
For example, if we create an array of 12 integers:
>>> a = numpy.arange(12)
>>> a
array([ 0, 1, 2, 3, 4, 5, 6, 7, ...
Django Setup Default Logging
...icating that configuration under root key has the highest priority. If the block is removed, the result is:
[FMT2] 2018-12-18 17:25:43,757 l1
[FMT2] 2018-12-18 17:25:43,757 l2
[FMT2] 2018-12-18 17:25:43,757 root logger
In both case, I was able to debug and determine that all three loggers (l1, l2...
What is a message pump?
...like Office.
A hard requirement for an STA thread is that it should never block and must pump a message loop. The message loop is important because that's what COM uses to marshal an interface method call from one thread to another. Although .NET makes marshaling calls easy (Control.BeginInvoke o...
Can a Windows batch file determine its own file name?
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In your code block, you state that f is the file name, but in your examples you use n for the file name. After some testing, it seems that f is the full path, and n is the file name.
– Drew Chapin
Oc...
Deep null checking, is there a better way?
... suggested,
another (albeit terrible) option would be to use a try…catch block to see if a NullReferenceException occurs sometime during that deep property lookup.
try
{
var x = cake.frosting.berries.loader;
...
}
catch (NullReferenceException ex)
{
// either one of cake, frosting, or...
Read a text file using Node.js?
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In Node when something is "synchronous" it stops/blocks the system from doing anything else. Let's say you have a node webserver - if any other requests come in while the above is happening, the server won't/can't respond because it is busy reading the file.
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How to Update Multiple Array Elements in mongodb
...t a matter of choosing an approach and iterating the results with the same block of code shown to process the Bulk update statements. Bulk Operations and "cursors" from aggregate output are introduced in the same version ( MongoDB 2.6 ) and therefore usually work hand in hand for processing.
In eve...
When to use SELECT … FOR UPDATE?
... a copy of the record (in one or another way) and generally readers do not block writers and vice versa. For these databases, a SELECT FOR UPDATE would come handy: it would lock either SELECT or the DELETE query until another session commits, just as SQL Server does.
When should one use REPEATA...
assign multiple variables to the same value in Javascript
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Besides moveUp becoming block-scoped, it would make no difference. 5 global variables would still be declared.
– Govind Rai
Jul 5 '18 at 15:08
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