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Warn user before leaving web page with unsaved changes
... that Firefox 4 didn't support custom messages in this dialog. As of april 2016, Chrome 51 is being rolled out in which custom messages are also being removed.
Some alternatives exist elsewhere on this site, but I think a dialog like this is clear enough:
Do you want to leave this site?
C...
Remove/hide a preference from the screen
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edited Mar 18 '13 at 12:16
darrenp
3,88511 gold badge2222 silver badges2121 bronze badges
answered F...
1052: Column 'id' in field list is ambiguous
I have 2 tables. tbl_names and tbl_section which has both the id field in them. How do I go about selecting the id field, because I always get this error:
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How can I send an email by Java application using GMail, Yahoo, or Hotmail?
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edited Jul 31 '17 at 12:22
answered Sep 6 '08 at 13:19
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Get pandas.read_csv to read empty values as empty string instead of nan
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edited Jun 25 '12 at 22:35
answered Jun 12 '12 at 21:33
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What is the best way to test for an empty string with jquery-out-of-the-box?
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answered Nov 28 '09 at 11:03
David HellsingDavid Hellsing
93.9k3939 gold badges160160 silver badges199199 bronze badges
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Replace transparency in PNG images with white background
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262
This works for me:
convert -flatten img1.png img1-white.png
Documentation references:
-fl...
linq query to return distinct field values from a list of objects
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152
objList.Select(o=>o.typeId).Distinct()
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How to get a time zone from a location using latitude and longitude coordinates?
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442
Time Zone Location Web Services
Google Maps Time Zone API
Bing Maps Time Zone API
Azure Maps Ti...
What is the strict aliasing rule?
...msg) onto a buffer of the word size of your system (like a pointer to uint32_ts or uint16_ts). When you overlay a struct onto such a buffer, or a buffer onto such a struct through pointer casting you can easily violate strict aliasing rules.
So in this kind of setup, if I want to send a message to s...