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How to wait for a keypress in R?
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This answer is similar to that of Simon's, but does not require extra input other than a newline.
cat("Press Enter to continue...")
invisible(scan("stdin", character(), nlines = 1, quiet = TRUE))
Using nlines=1 instead of n=1, the user can simply press enter to continue the Rscript.
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Iterator Loop vs index loop [duplicate]
...lso use different strides (e.g. std::advance(it, 2));
Disadvantages: need extra work to get the index of the current element (could be O(N) for list or forward_list). Again, the loop control is a little verbose (init, check, increment).
3) STL for_each algorithm + lambda
std::for_each(v.begin(),...
In Python, how do you convert seconds since epoch to a `datetime` object?
...ollows: datetime.fromtimestamp(1423524051, timezone.utc). It has saved the extra library many times when I only need the UTC timezone from pytz.
– phouse512
Jan 10 '18 at 17:28
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What are all codecs and formats supported by FFmpeg?
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Thank you very much llogan for those extra filtering options. Is it possible to further go, and for example ask FFMPEG to list all Encoders/Decoders that are only for Video, or only for Audio?
– spaceman
May 4 at 15:39
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How to exit a function in bash
...here are definitely solutions possible, but I just wanted to call out that extra care needs to be taken with set -e and returning non-zero values, as that caught me by surprise in the past.
– Yevgeniy Brikman
Jul 12 '19 at 21:19
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How to force IntelliJ IDEA to reload dependencies from build.sbt after they changed?
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[warn]
[warn] Note: Some unresolved dependencies have extra attributes. Check that these dependencies exist with the requested attributes.
[warn] org.jetbrains:sbt-structure:latest.integration (sbtVersion=0.13, scalaVersion=2.10)
I have opened a ticket at JetBrains.
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What are major differences between C# and Java?
...t of the language syntax.
• C# allows switch statements to operate on strings.
• C# allows anonymous methods providing closure functionality.
• C# allows iterator that employs co-routines via a functional-style yield keyword.
• C# has support for output parameters, aiding in the ...
Get time difference between two dates in seconds
...act them and divide by 1000 (since it's originally in milliseconds). As an extra, when you're calling the getDate() method, you're in fact getting the day of the month as an integer between 1 and 31 (not zero based) as opposed to the epoch time you'd get from calling the getTime() method, representi...
What are the main performance differences between varchar and nvarchar SQL Server data types?
...ormance can be...
SQL Server uses high CPU when searching inside nvarchar strings
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What is the difference between Reader and InputStream?
... makes your easier to internationalize and maintain.
Note: This is just an extra information for exploring Java I/O codes is that, the design pattern of Java I/O implementation follows decorator design pattern. If you familiar with decorator design pattern then you can easily catchup the implementat...