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How could the UNIX sort command sort a very large file?
...Probably sort -S pre-allocates the memory for the sort process before even reading the contents of file.
– Fred Gannett
Oct 16 '17 at 10:07
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How to install an npm package from GitHub directly?
...of users commenting that you can't do this for all modules because you are reading from a source control system, which may well contain invalid/uncompiled/buggy code. So to be clear (although it should go without saying): given that the code in the repo is in an npm-usable state, you can now quite h...
What does .SD stand for in data.table in R
...f life for data munging -- as of this writing, fwrite cannot automatically read Date or POSIXct columns, and conversions back and forth among character/factor/numeric are common. We can use .SD and .SDcols to batch-convert groups of such columns.
We notice that the following columns are stored as c...
Is there a Unix utility to prepend timestamps to stdin?
...m nanoseconds to three characters. It will look like this: COMMAND | while read -r line; do echo "$(date '+%Y-%m-%d %T.%3N') $line"; done. Note that you can abbreviate %H:%M:%S with %T. If you still want to use awk for some reason, you can do the following: COMMAND | awk '{ "date +%Y-%m-%d\\ %T.%3N"...
Fluent and Query Expression — Is there any benefit(s) of one over other?
... (e => e.Title)
.FirstOrDefault();
I find that a little easier to read.
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Why does a return in `finally` override `try`?
...it's not a hard and fast rule, but most of the copunter-examples in that thread are pretty contrived, and the only valid case I see is the "guard clause" (essentially the pattern of checking input data at the top of the function and returning conditionally). That's a perfectly valid case, but really...
What should be the values of GOPATH and GOROOT?
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I read the go help gopath docs and was still incredibly confused, but found this little nugget from another go doc page:
The GOPATH environment variable specifies the location of your workspace. It is likely the only enviro...
How to create a custom exception type in Java? [duplicate]
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You seem to already have the catch within your code, I'm not sure exactly where you want the exception to be thrown. You could put it before the catch section, or inside of it. I edited it assuming how you might want to use the exception
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Passing data between a fragment and its container activity
...at I didn't realize is that you can implement multiple interfaces, I was already implementing a ActionBar.TabListener and had to add an additional interface.
– Eugene van der Merwe
Aug 17 '12 at 23:53
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When to use extern in C++
I'm reading "Think in C++" and it just introduced the extern declaration. For example:
4 Answers
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