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Getting Python error “from: can't read /var/mail/Bio”

...ot the script, it's the fact that your script is not executed by Python at all. If your script is stored in a file named script.py, you have to execute it as python script.py, otherwise the default shell will execute it and it will bail out at the from keyword. (Incidentally, from is the name of a c...
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There is already an open DataReader associated with this Command which must be closed first

...en iterating over the results of some query. This can be easily solved by allowing MARS in your connection string. Add MultipleActiveResultSets=true to the provider part of your connection string (where Data Source, Initial Catalog, etc. are specified). ...
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What is the best way to implement a “timer”? [duplicate]

...iseconds, specified by the Interval property on the Timer object. It will call the Event Handler method you specify. In the example above, it is OnTimedEvent. share | improve this answer | ...
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Associating enums with strings in C#

...e behaviour in the editor. E.G.: switching over this one wouldn't automatically fill in a case for each possibility. Other than those minor points, I think this is probably a rather simple solution. – Boris Callens Aug 28 '09 at 7:06 ...
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how do i remove a comma off the end of a string?

... Thank you, I was doing this with substr, strlen,... all my life – Farhad Apr 15 '15 at 17:59 add a comment  |  ...
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How do I output the difference between two specific revisions in Subversion?

... If you want pretty output, install colordiff and add ` | colordiff` to the end of the above command to pipe everything through it. – William Turrell Sep 28 '16 at 19:25 ...
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How to make space between LinearLayout children?

I am programatically adding custom views to a vertical LinearLayout, and I would like there to be some space between the views. I have tried adding: setPadding(0, 1, 0, 1) to my CustomView constructor, but this doesn't seem to have any effect. Any advice? ...
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Setting background colour of Android layout element

... You can use simple color resources, specified usually inside res/values/colors.xml. <color name="red">#ffff0000</color> and use this via android:background="@color/red". This color can be used anywhere else too, e.g. as a text color. Reference it in XML the s...
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How to rethrow the same exception in SQL Server

... @BrianJ: normally, whether the execution stops or not depends on the severity of the original error. If the severity is >= 11 then the execution should stop. It is really weird, because the raiserror inside the catch block with a sever...
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Why am I not getting a java.util.ConcurrentModificationException in this example?

... iterator and listIterator methods are fail-fast: if the list is structurally modified at any time after the iterator is created, in any way except through the iterator's own remove or add methods, the iterator will throw a ConcurrentModificationException. This check is done in the next() ...