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mkdir's “-p” option
So this doesn't seem like a terribly complicated question I have, but it's one I can't find the answer to. I'm confused about what the -p option does in Unix. I used it for a lab assignment while creating a subdirectory and then another subdirectory within that one. It looked like this:
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Java Persistence / JPA: @Column vs @Basic
...in JPA? Can they be used together? Should they be used together? Or does one of them suffice?
4 Answers
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In which scenario do I use a particular STL container?
... section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of them is used.
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How to Copy Contents of One Canvas to Another Canvas Locally
I'd like to copy ALL contents of one canvas and transfer them to another all on the client-side. I would think that I would use the canvas.toDataURL() and context.drawImage() method to implement this but I am running into a few issues.
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An App ID with Identifier '' is not available. Please enter a different string
...fault in Safari. Didn't see that there are more entries... Because all the ones created by Xcode start with XC, they appear at the bottom...
– endavid
Sep 15 '19 at 10:43
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Map.clear() vs new Map : Which one will be better? [duplicate]
... you go with .clear(),so you are using same object instead of creating new one
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Best way to remove from NSMutableArray while iterating?
...mory and processing cost of allocating a new array, and discarding the old one?) but even if it's faster it may not be as big a deal as it would be for a naive implementation, because NSArrays do not behave like "normal" arrays. They talk the talk but they walk a different walk. See a good analysis...
How can I start an interactive console for Perl?
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Not only did Matt Trout write an article about a REPL, he actually wrote one - Devel::REPL
I've used it a bit and it works fairly well, and it's under active development.
BTW, I have no idea why someone modded down the person who mentioned using "perl -e" from the console. This isn't really a RE...
SQL Server String or binary data would be truncated
...n project. I am getting the following error when I try to insert data from one table into another table (SQL Server 2005):
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Convert line-endings for whole directory tree (Git)
...straight forward process.
dos2unix filename
Thanks to toolbear, here is a one-liner that recursively replaces line endings and properly handles whitespace, quotes, and shell meta chars.
find . -type f -exec dos2unix {} \;
If you're using dos2unix 6.0 binary files will be ignored.
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