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location.host vs location.hostname and cross-browser compatibility?
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1099
As a little memo: the interactive link anatomy
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In short (assuming a location of http:...
How does Chrome's “Request Desktop Site” option work?
...illa/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76K) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.45 Safari/535.19
Notice the word "Mobile' in the first one, and also ...
How to prove that a problem is NP complete?
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146
To show a problem is NP complete, you need to:
Show it is in NP
In other words, given some inf...
Equal sized table cells to fill the entire width of the containing table
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144
You don't even have to set a specific width for the cells, table-layout: fixed suffices to spr...
How to crop an image using PIL?
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201
There is a crop() method:
w, h = yourImage.size
yourImage.crop((0, 30, w, h-30)).save(...)
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Postgres - FATAL: database files are incompatible with server
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413
If you recently upgraded to 11 or 12 from 10.x you can run the below command to upgrade your po...
How to tag an older commit in Git?
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1558
Example:
git tag -a v1.2 9fceb02 -m "Message here"
Where 9fceb02 is the beginning part of ...
:not(:empty) CSS selector is not working?
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11 Answers
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MongoDB aggregation framework match OR
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170
$match: { $or: [{ author: 'dave' }, { author: 'john' }] }
Like so, since the $match operator...