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How do I check if a string is a number (float)?
...but I think it's very close): it is more usual to put only the part being "tested" in the try clause, so I would put the return True in an else clause of the try. One of the reasons is that with the code in the question, if I had to review it, I would have to check that the second statement in the ...
Postgres dump of only parts of tables for a dev snapshot
...ction our database is a few hundred gigabytes in size. For development and testing, we need to create snapshots of this database that are functionally equivalent, but which are only 10 or 20 gigs in size.
...
Returning value from Thread
...A value gets changed inside the Thread and I'd like to return it to the test() method. Is there a way to do this?
8 Ans...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
... than subtracting DateTime values:
Stopwatch s = Stopwatch.StartNew();
// Tested code here
s.Stop();
Console.WriteLine("Elapsed Time: {0} ms", s.ElapsedMilliseconds);
Unfortunately, this simple piece of code won't be enough to get accurate measurements most of the times because there’s a lot of...
Passing arguments to C# generic new() of templated type
... question, but new answer ;-)
The ExpressionTree version: (I think the fastests and cleanest solution)
Like Welly Tambunan said, "we could also use expression tree to build the object"
This will generate a 'constructor' (function) for the type/parameters given. It returns a delegate and accept th...
Clear text from textarea with selenium
I've got some tests where I'm checking that the proper error message appears when text in certain fields are invalid. One check for validity is that a certain textarea element is not empty.
...
Checking if an instance's class implements an interface?
...
See: http://php.net/manual/en/function.class-implements.php
Performance Tests
Some simple performance tests show the costs of each approach:
Given an instance of an object
Object construction outside the loop (100,000 iterations)
____________________________________________
| class_implement...
C# List of objects, how do I get the sum of a property
...
Here is example code you could run to make such test:
var f = 10000000;
var p = new int[f];
for(int i = 0; i < f; ++i)
{
p[i] = i % 2;
}
var time = DateTime.Now;
p.Sum();
Console.WriteLine(DateTime.Now - time);
int x = 0;
time = DateTime.Now;
foreach(var item in...
SQL is null and = null [duplicate]
...ows by coding where my_column = null.
SQL provides the special syntax for testing if a column is null, via is null and is not null, which is a special condition to test for a null (or not a null).
Here's some SQL showing a variety of conditions and and their effect as per above.
create table t (x...
Executing elements inserted with .innerHTML
...o it would look like this instead:
<img src="empty.gif" onload="alert('test');this.parentNode.removeChild(this);" />
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