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Why is rbindlist “better” than rbind?
I am going through documentation of data.table and also noticed from some of the conversations over here on SO that rbindlist is supposed to be better than rbind .
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Looking for a clear definition of what a “tokenizer”, “parser” and...
I am looking for a clear definition of what a "tokenizer", "parser" and "lexer" are and how they are related to each other (e.g., does a parser use a tokenizer or vice versa)? I need to create a program will go through c/h source files to extract data declaration and definitions.
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Can I automatically increment the file build version when using Visual Studio?
I was just wondering how I could automatically increment the build (and version?) of my files using Visual Studio (2005).
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What is the difference between 127.0.0.1 and localhost
...hen (intelligent) software will just turn that directly into an IP address and use it. Some implementations of gethostbyname will detect the dotted format (and presumably the equivalent IPv6 format) and not do a lookup at all.
Otherwise, the name has to be resolved. And there's no guarantee that yo...
Removing duplicates from a list of lists
...pby(k))
[[1, 2], [3], [4], [5, 6, 2]]
itertools often offers the fastest and most powerful solutions to this kind of problems, and is well worth getting intimately familiar with!-)
Edit: as I mention in a comment, normal optimization efforts are focused on large inputs (the big-O approach) becaus...
How to list the size of each file and directory and sort by descending size in Bash?
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Simply navigate to directory and run following command:
du -a --max-depth=1 | sort -n
OR add -h for human readable sizes and -r to print bigger directories/files first.
du -a -h --max-depth=1 | sort -hr
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Best Practice: Software Versioning [closed]
Is there any guideline or standard best practice how to version a software you develop in your spare time for fun, but nevertheless will be used by some people? I think it's necessary to version such software so that you know about with version one is talking about (e.g. for bug fixing, support, and...
Why is GHC so large/big?
... have to decide up front whether you're going to link dynamically or not. And we need more changes (e.g. to Cabal and the package system, amongst other things) before this is really practical.
share
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Normalizing mousewheel speed across browsers
...ons of the same browser on OS X have yielded different values in the past, and may do so in the future, and that
Using the trackpad on OS X yields very similar effects to using a mouse wheel, yet gives very different event values, and yet the device difference cannot be detected by JS
…I can onl...
Can hash tables really be O(1)?
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You have two variables here, m and n, where m is the length of the input and n is the number of items in the hash.
The O(1) lookup performance claim makes at least two assumptions:
Your objects can be equality compared in O(1) time.
There will be few ha...