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Check if a value exists in pandas dataframe index
...taframe was defined with column headings rather than an index, e.g.: df = pandas.DataFrame({'test':[1,2,3,4]}, columns=['a','b','c','d'])
– Tahlor
Jun 22 '18 at 14:54
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Smooth scrolling when clicking an anchor link
... scrollTop: $($.attr(this, 'href')).offset().top
}, 500);
});
And here's the fiddle: http://jsfiddle.net/9SDLw/
If your target element does not have an ID, and you're linking to it by its name, use this:
$('a[href^="#"]').click(function () {
$('html, body').animate({
scr...
java.net.UnknownHostException: Invalid hostname for server: local
... answered Jun 26 '11 at 13:37
André LaszloAndré Laszlo
13.5k22 gold badges5757 silver badges7272 bronze badges
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What difference does .AsNoTracking() make?
...estion regarding the .AsNoTracking() extension, as this is all quite new and quite confusing.
6 Answers
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psql: could not connect to server: No such file or directory (Mac OS X)
...master has exited.).
SOLUTION: This fixed the issue--I deleted this file, and then everything worked!
/usr/local/var/postgres/postmaster.pid
--
and here is how I figured out why this needed to be deleted.
I used the following command to see if there were any PG processes running. for me ther...
MySQL show status - active or total connections?
...show status like 'Con%' it shows the number of connections, which is 9972 and constantly growing. Is this an active number of connections or connections made in total?
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What does .SD stand for in data.table in R
...ks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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History or log of commands executed in Git
Is there a way I can keep track of commands I used in Git under Windows? I want to view all the commands that I have applied on my repository.
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Ruby on Rails: Delete multiple hash keys
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While using Hash#except handles your problem, be aware that it introduces potential security issues. A good rule of thumb for handling any data from visitors is to use a whitelist approach. In this case, using Hash#slice instead.
params.slice!(:para...
Sending images using Http Post
I want to send an image from the android client to the Django server using Http Post. The image is chosen from the gallery. At present, I am using list value name Pairs to send the necessary data to the server and receiving responses from Django in JSON. Can the same approach be used for images (wit...