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How do short URLs services work?
...n the database, they find a description (sometimes), your name (sometimes) and the real URL. Then they issue a redirect, which is a HTTP 302 response and the target URL in the header.
This direct redirect is important. If you were to use files or first load HTML and then redirect, the browser would...
How to display length of filtered ng-repeat data
...Angular prior to 1.3
Assign the results to a new variable (e.g. filtered) and access it:
<div ng-repeat="person in filtered = (data | filter: query)">
</div>
Display the number of results:
Showing {{filtered.length}} Persons
Fiddle a similar example. Credits go to Pawel Kozlowski
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How does UTF-8 “variable-width encoding” work?
The unicode standard has enough code-points in it that you need 4 bytes to store them all. That's what the UTF-32 encoding does. Yet the UTF-8 encoding somehow squeezes these into much smaller spaces by using something called "variable-width encoding".
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Sample random rows in dataframe
...propriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?
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How might I convert a double to the nearest integer value?
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double d = 1.234;
int i = Convert.ToInt32(d);
Reference
Handles rounding like so:
rounded to the nearest 32-bit signed integer. If value is halfway
between two whole numbers, the even number is returned; that is, 4.5
is converted to 4, and 5.5 is converted to 6.
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Is there any difference between GROUP BY and DISTINCT
...the SQL Server is smart enough to realize that if you are using "Group By" and not using any aggregate functions, then what you actually mean is "Distinct" - and therefore it generates an execution plan as if you'd simply used "Distinct."
However, I think it's important to note Hank's response as w...
How to change line-ending settings
...lf"
If you want to know what file this is saved in, you can run the command:
git config --global --edit
and the git global config file should open in a text editor, and you can see where that file was loaded from.
shar...
git diff renamed file
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The issue with the difference between HEAD^^ and HEAD is that you have an a.txt in both commits, so just considering those two commits (which is what diff does), there is no rename, there is a copy and a change.
To detect copies, you can use -C:
git diff -C HEAD^^ HEA...
Print an integer in binary format in Java
I have a number and I want to print it in binary. I don't want to do it by writing an algorithm, Is there any built-in function for that in Java?
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“unrecognized selector sent to instance” error in Objective-C
I created a button and added an action for it, but as soon as it invoked, I got this error:
38 Answers
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