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Exposing a port on a live Docker container
... to create a Docker container that acts like a full-on virtual machine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map additional por...
Learn C first before learning Objective-C [closed]
...s, they started with Obj-C and learned only as much C as necessary.
Every now and then I see how they solve a problem entirely in Obj-C, sometimes resulting in a very clumsy solutions. Usually I then replace some Obj-C code with pure C code (after all you can mix them as much as you like, the conte...
Why are dashes preferred for CSS selectors / HTML attributes?
...elopers avoided it like the plague. Of course, we don't need the backslash nowadays, but the dash-etiquette has already been firmly established.
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What's the fastest way to merge/join data.frames in R?
...version.string
# R version 2.15.1 (2012-06-22)
Please note that I don't know plyr well so please do check with Hadley before relying on the plyr timings here. Also note that the data.table do include the time to convert to data.table and set the key, for fareness.
This answer has been updated s...
Group vs role (Any real difference?)
... between group and role? I've been trying to figure this out for some time now and the more information I read, the more I get the sense that this is brought up just to confuse people and there is no real difference. Both can do the other's job. I've always used a group to manage users and their acc...
Generic method multiple (OR) type constraint
...to use one function. Ah well, thanks a lot! Just out of curiosity, do you know if there is a specific reason this isn't possible? (has it been left out of the language deliberately?)
– Mansfield
May 31 '12 at 12:55
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Rebasing and what does one mean by rebasing pushed commits
...stream repo, and other developer's local repos may have pointers to that. Now their pointers are stale: the git client has no alternative but to use older pointers and rely upon the human to sort the rest out. This is a re-merge, and it can be VERY messy with a lot of confusing changes that must b...
SQL Server CTE and recursion example
...AS MyColName
-- Or
SELECT MyColName = 1
-- Etc...
)
Q 2) now here about CTE and recursion of employee relation
the moment i add two manager and add few more employee under second manager then problem start.
i want to display first manager detail and in the next rows only those empl...
What's the point of map in Haskell, when there is fmap?
...feel the need for a map function? Couldn't it just be what is currently known as fmap and fmap could be removed from the language?
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How does the Amazon Recommendation feature work?
...ile of you
Demographic information (your shipping address, etc.) - they know what is popular in your general area for your kids, yourself, your spouse, etc.
user segmentation = did you buy 3 books in separate months for a toddler? likely have a kid or more.. etc.
Direct marketing click throug...