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mongodb: insert if not exists
... v2.5.4 or there abouts. If you see this message or issue, just get the latest version.
– Kieren Johnstone
May 17 '15 at 20:16
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Is there a way to create a function from a string with javascript?
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I added a jsperf test for 4 different ways to create a function from string :
Using RegExp with Function class
var func = "function (a, b) { return a + b; }".parseFunction();
Using Function class with "return"
var func = new Function("re...
Check if a JavaScript string is a URL
...ring
'(\\#[-a-z\\d_]*)?$','i'); // fragment locator
return !!pattern.test(str);
}
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How does git compute file hashes?
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@osgx There is. The reference and my testing confirms so. I've corrected the answer. Size seems to be number of bytes as integer with no prefix.
– Samuel Harmer
May 14 '17 at 12:15
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How do I write unencoded Json to my View using Razor?
...lt;/script><script>alert('jsonEncodePotentialAttendees failed XSS test')</script>" } }
));
alert('jsonEncodePotentialAttendees passed XSS test: ' + jsonEncodePotentialAttendees[0].Name);
</script>
<script>
var safeNewtonsoftPotentialAttendees = JSON.parse(@Html...
Quickly find whether a value is present in a C array?
...s of utmost importance, the C compiler will most likely not produce the fastest code compared to what you can do with hand tuned assembly language. I tend to take the path of least resistance - for small routines like this, I just write asm code and have a good idea how many cycles it will take to e...
Java NIO FileChannel versus FileOutputstream performance / usefulness
...s comparing these two methods. Here is the code I used, the file that I am testing with is around 350MB . Is it a good option to use NIO based classes for File I/O, if I am not looking at random access or other such advanced features?
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Equation for testing if a point is inside a circle
... circle with center (center_x, center_y) and radius radius , how do you test if a given point with coordinates (x, y) is inside the circle?
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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
... RETURN NULL;
END;
RETURN v_int_value;
END;
$$ LANGUAGE plpgsql;
Testing:
=# select convert_to_integer('1234');
convert_to_integer
--------------------
1234
(1 row)
=# select convert_to_integer('');
NOTICE: Invalid integer value: "". Returning NULL.
convert_to_integer...
Should try…catch go inside or outside a loop?
...ich way the performance would be affected, I guess were back to try-it-and-test (as always).
– Jeffrey L Whitledge
Sep 27 '08 at 18:35
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