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In Docker, what's the difference between a container and an image? [duplicate]
What's the difference between a container and an image in Docker? In the Get started with Docker tutorial these terms are both used, but I do not understand the difference.
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What is a tracking branch?
...nd branches. This often referenced link web.archive.org/web/20130419172453/http://www.gitguys.com/… distinguishes between "tracking branches" & "remote tracking branches". They call origin/master a "remote tracking branch" - I agree - but then they call "master" a "tracking branch" too. What i...
How does a debugger work?
... Applications for Microsoft .NET and Microsoft Windows" by John Robbins:
http://www.amazon.com/dp/0735615365
(or even the older edition: "Debugging Applications")
The book has has a chapter on how a debugger works that includes code for a couple of simple (but working) debuggers.
Since I'm n...
Drop rows with all zeros in pandas data frame
I can use pandas dropna() functionality to remove rows with some or all columns set as NA 's. Is there an equivalent function for dropping rows with all columns having value 0?
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Current time in microseconds in java
On a Unix system, is there a way to get a timestamp with microsecond level accuracy in Java? Something like C's gettimeofday function.
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How to generate random number in Bash?
How to generate a random number within a range in Bash?
17 Answers
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What's the difference between ES6 Map and WeakMap?
...WeakMap allows garbage collector to do its task but not Map.
References: http://qnimate.com/difference-between-map-and-weakmap-in-javascript/
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Xcode/Simulator: How to run older iOS version?
I'm thinking of upgrading to iOS SDK 4.2. But what I'm wondering is if I'll still be able to run the simulator as iOS 3.2. This is because I'm creating iAds for iPad but I still want to check if my program will run with iOS 3.2.
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How do I set default values for functions parameters in Matlab?
Is it possible to have default arguments in Matlab? For instance, here:
16 Answers
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Checking for a null int value from a Java ResultSet
In Java I'm trying to test for a null value, from a ResultSet, where the column is being cast to a primitive int type.
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