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Add unique constraint to combination of two columns
I have a table and, somehow, the same person got into my Person table twice. Right now, the primary key is just an autonumber but there are two other fields that exist that I want to force to be unique.
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How do I work around JavaScript's parseInt octal behavior?
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Number(08); gives me 8 in Firefox and IE.
– Paolo Bergantino
May 11 '09 at 22:23
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How to scroll up or down the page to an anchor using jQuery?
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Description
You can do this using jQuery.offset() and jQuery.animate().
Check out the jsFiddle Demonstration.
Sample
function scrollToAnchor(aid){
var aTag = $("a[name='"+ aid +"']");
$('html,body').animate({scrollTop: aTag.offset().top},'slow');
}
scrollToAncho...
How can I set a website image that will show as preview on Facebook?
... share a link on facebook it will automatically find images on the website and randomly picks one as a preview. How can you influence the preview image? When a person shares the website link on his facebook?
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Pandas: Looking up the list of sheets in an excel file
The new version of Pandas uses the following interface to load Excel files:
6 Answers
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Set angular scope variable in markup
...ble value.
I found this very useful when iterating multiple nested arrays and I wanted to keep my current iteration info in one variable instead of querying it multiple times.
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Create an array or List of all dates between two dates [duplicate]
...n a time-series, you could enumerate all the dates in the full date-range, and pick the value for a date directly from the series if it exists, or the default otherwise. For example:
var paddedSeries = fullDates.ToDictionary(date => date, date => timeSeries.ContainsDate(date)
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When should i use npm with “-g” flag and why?
...g npm for js package management recently. Although I do have a fair understanding of package management in different enivronments(lets say using apt, rvm/gem, pythonbrew/virtualenv/pip), I don't quite understand how npm fully fits in.
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Batch script loop
I need to execute a command 100-200 times, and so far my research indicates that I would either have to copy/paste 100 copies of this command, OR use a for loop, but the for loop expects a list of items, hence I would need 200 files to operate on, or a list of 200 items, defeating the point.
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What's the actual use of 'fail' in JUnit test case?
...here I have found it useful:
mark a test that is incomplete, so it fails and warns you until you can finish it
making sure an exception is thrown:
try{
// do stuff...
fail("Exception not thrown");
}catch(Exception e){
assertTrue(e.hasSomeFlag());
}
Note:
Since JUnit4, there is a more ...