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Check if a temporary table exists and delete if it exists before creating a temporary table
...p the table if it exists before creating again. It works fine as long as I don't change the columns. If I add a column later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
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Best way to generate random file names in Python
In Python, what is a good, or the best way to generate some random text to prepend to a file(name) that I'm saving to a server, just to make sure it does not overwrite. Thank you!
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Calculate distance between two points in google maps V3
How do you calculate the distance between two markers in Google maps V3? (Similar to the distanceFrom function inV2.)
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Convert an image to grayscale in HTML/CSS
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In webkit you do this: -webkit-filter: grayscale(100%); then this: -webkit-filter: grayscale(0); to remove it.
– SeanJA
Mar 26 '12 at 23:41
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Check if object is a jQuery object
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So do you mean if (obj instanceof jQuery){...}?
– Nigel Angel
Oct 25 '13 at 14:48
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How can we run a test method with multiple parameters in MSTest?
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@McAden do you have a link with an explanation?
– jeroenh
Dec 4 '12 at 22:10
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How is an overloaded method chosen when a parameter is the literal null value?
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I never read that thing. But I did do some Java this summer and you can overload a method taking an Object with a method taking a Void object.
– xavierm02
Oct 23 '12 at 17:12
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How to cat a file containing code?
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You only need a minimal change; single-quote the here-document delimiter after <<.
cat <<'EOF' >> brightup.sh
or equivalently backslash-escape it:
cat <<\EOF >>brightup.sh
Without quoting, the here document will undergo variable substitution, ...
MongoDB Many-to-Many Association
How would you do a many-to-many association with MongoDB?
4 Answers
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“No X11 DISPLAY variable” - what does it mean?
...able is set correctly (providing it isn't being messed with in the various dot files I mentioned above). In a "ssh -X" session, the DISPLAY environment variable will have a value like "localhost:11.0", which will point to the socket that ssh is tunnelling to your local box.
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