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Possible reasons for timeout when trying to access EC2 instance

I cannot SSH into my instance - Operation timed out. What could be the reasons why, and what can I do to resolve it? Rebooting normally takes a long time to take effect, and might just makes things worst ...
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How do I get a string format of the current date time, in python?

... You can use the datetime module for working with dates and times in Python. The strftime method allows you to produce string representation of dates and times with a format you specify. >>> import datetime >>> datetime.date.t...
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How do I disconnect all other users in tmux?

...ients to detach; it will also list they col/lines as well as the last used time. Note the uppercase D, i.e. Shift+d. You could also use tmux's detach-client option detach-client [-P] [-a] [-s target-session] [-t target-client] (alias: detach) Detach the current client if b...
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Difference between declaring variables before or in loop?

... Well I ran your A and B examples 20 times each, looping 100 million times.(JVM - 1.5.0) A: average execution time: .074 sec B: average execution time : .067 sec To my surprise B was slightly faster. As fast as computers are now its hard to say if you could a...
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Python string class like StringBuilder in C#?

...hon: Building long strings in the Python progamming language can sometimes result in very slow running code. In this article I investigate the computational performance of various string concatenation methods. ...
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How to deploy an ASP.NET Application with zero downtime

... @EBarr: and in any case technically you still have zero downtime on the ASP.NET app -- the question isn't "how to deploy to a sql server db with zero downtime". – Sklivvz Jan 20 '11 at 15:48 ...
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Use PHP to create, edit and delete crontab jobs?

... this will keep on appending the same job each time in a file. (checked) is there a way to remove the matching jobs first then write a new one? – R T Dec 17 '14 at 8:03 ...
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What's the right way to decode a string that has special HTML entities in it? [duplicate]

... use it: he.decode("We're unable to complete your request at this time."); → "We're unable to complete your request at this time." Disclaimer: I'm the author of the he library. See this Stack Overflow answer for some more info. ...
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What is the rationale behind having companion objects in Scala?

... a bridge to write both functional and object oriented code in Scala. Many times we just need pure functions which take some input and provide a processing result. Putting those relevant functions in the companion object makes it easy to look up and use, for myself as well as some one building on to...
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How can I measure the speed of code written in PHP? [closed]

... You have (at least) two solutions : The quite "naïve" one is using microtime(true) tobefore and after a portion of code, to get how much time has passed during its execution ; other answers said that and gave examples already, so I won"t say much more. This is a nice solution if you want to benc...