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How to change the DataTable Column Name?
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I just tried this solution now and it works fine - it did not do any changes or wipe out the underlying column data. Maybe something else is happening in your code...
– AshesToAshes
Aug 15 '13 at 15:25
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What's the purpose of the LEA instruction?
...(x, y) coordinates:
struct Point
{
int xcoord;
int ycoord;
};
Now imagine a statement like:
int y = points[i].ycoord;
where points[] is an array of Point. Assuming the base of the array is already in EBX, and variable i is in EAX, and xcoord and ycoord are each 32 bits (so ycoord is ...
Understanding ibeacon distancing
...ssi) over the calibrated transmitter power (txPower). The txPower is the known measured signal strength in rssi at 1 meter away. Each beacon must be calibrated with this txPower value to allow accurate distance estimates.
While the distance estimates are useful, they are not perfect, and require ...
Best way to test exceptions with Assert to ensure they will be thrown
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Now, 2017, you can do it easier with the new MSTest V2 Framework:
Assert.ThrowsException<Exception>(() => myClass.MyMethodWithError());
//async version
await Assert.ThrowsExceptionAsync<SomeException>(
() =...
Is the safe-bool idiom obsolete in C++11?
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Wouldn't have been able to know that, sorry. I didn't consider only the answer linked at the beginning, but also the fact that the question is tagged [c++] and [c++-faq], that led me to think that evaluation of both stages of the language was relevant.
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Error handling in Bash
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set -e -o pipefail -u # and know what you are doing
– Sam Watkins
Jul 3 '14 at 8:32
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Do I really need to encode '&' as '&'?
... The second case of amp&volt is ambiguous: Is &volt now an entity reference or not?
– Gumbo
Aug 16 '10 at 14:40
7
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GroupBy pandas DataFrame and select most common value
I have a data frame with three string columns. I know that the only one value in the 3rd column is valid for every combination of the first two. To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination.
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ASP.NET: HTTP Error 500.19 – Internal Server Error 0x8007000d
...version, remove the current one and re-install, close IIS and restart IIS, now I can see "URL Rewrite".
– Box Very
Sep 19 '16 at 22:47
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Why aren't Java Collections remove methods generic?
...nd C#) without ever realising that "actual damage" rule even exists... but now that I've seen it stated directly it makes 100% perfect sense. Thanks for the fish!!! Except now I feel compelled to go back and look at my implementations, to see if some methods can and therefore should be degenerified....