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Invalidating JSON Web Tokens
...ed tokens in redis, memcached or another in-memory datastore that supports setting an expiration time on a key.
You still have to make a call to your in-memory db for every authentication request that passes initial JWT auth, but you don't have to store keys for your entire set of users in there. ...
Delete all lines beginning with a # from a file
All of the lines with comments in a file begin with # . How can I delete all of the lines (and only those lines) which begin with # ? Other lines containing # , but not at the beginning of the line should be ignored.
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AsyncTask threads never die
I'm using AsyncTask s to fetch data in response to the user pressing a button. This works well and keeps the interface responsive while fetching the data, but when I checked out what was going on in the Eclipse debugger, I found out that every time a new AsyncTask was created (which is quite ofte...
Get GPS location from the web browser
I am developing a mobile based web-site, there I have integrated Google Maps, I need to fill the 'From' field of Google Maps dynamically.
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Where should @Service annotation be kept? Interface or Implementation?
...ceI and ServiceImpl such that ServiceImpl implements ServiceI . I'm confused here as to where should I keep the @Service annotation.
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How to compare two floating point numbers in Bash?
I am trying hard to compare two floating point numbers within a bash script. I have to variables, e.g.
17 Answers
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Javascript - Track mouse position
I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form.
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Best way to concatenate List of String objects? [duplicate]
What is the best way to concatenate a list of String objects? I am thinking of doing this way:
19 Answers
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How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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Download a specific tag with Git
I'm trying to figure out how I can download a particular tag of a Git repository - it's one version behind the current version.
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