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Adding new column to existing DataFrame in Python pandas
... did it wrong (it can trigger false positives) but from 0.13.0 it let you know there are more adequate methods for the same purpose. Then, if you get the warning, just follow its advise: Try using .loc[row_index,col_indexer] = value instead
>>> df1.loc[:,'f'] = pd.Series(np.random.randn(sL...
INNER JOIN vs LEFT JOIN performance in SQL Server
... LEFT JOIN because the performance of LEFT JOIN is better, despite what I know. After I changed it, the speed of query got significantly improved.
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What are some compelling use cases for dependent method types?
...pendent method types, which used to be an experimental feature before, has now been enabled by default in the trunk , and apparently this seems to have created some excitement in the Scala community.
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Programmatically scroll a UIScrollView
... flick. Basically my code works in a way similar to the iPhone photo app. Now, is there a way that I can programmatically do the same thing so that I end up with a slideshow that runs on its own with a click of a button and a configurable pause between each scroll?
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Best way to test SQL queries [closed]
...onth as
select *, year * 12 + month as absolute_month from month_value;
Now what we have to test is inherent in our spec, namely that for any tuple (year, month), there is one and only one (absolute_month), and that (absolute_month)s are consecutive. Let's write some tests.
Our test will be a SQ...
Sending an HTTP POST request on iOS
...t setURL:[NSURL URLWithString:@"http://www.abcde.com/xyz/login.aspx"]];
Now, set HTTP method (POST or GET). Write this lines as it is in your code.
[request setHTTPMethod:@"POST"];
Set HTTP header field with length of the post data.
[request setValue:postLength forHTTPHeaderField:@"Content-...
How to delete a whole folder and content?
...Deleting a folder and recreating the folder resulting in creation of an unknown file with same name of folder mentioned.And if i'm trying to access that file it is throwing exception like Resource or device busy.I also checked the Properties of file where i found MD5 Signature:Operation Failure
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MongoDB drop every database
I would like to know if there're a command to drop every databases from my MongoDB?
8 Answers
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How to detect scroll position of page using jQuery
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Now that works for me...
$(document).ready(function(){
$(window).resize(function(e){
console.log(e);
});
$(window).scroll(function (event) {
var sc = $(window).scrollTop();
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Detect if an element is visible with jQuery [duplicate]
...element on my page, but with two buttons, one for hide and one for show. I now want to have one button to toggle both .
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