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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...ting numbers between [1,2):
worst relative error using powf(a, 6.f): 5.96e-08
worst relative error using (a*a*a)*(a*a*a): 2.94e-07
worst relative error using a*a*a*a*a*a: 2.58e-07
Using pow instead of a multiplication tree reduces the error bound by a factor of 4. Compilers should not (an...
Have a fixed position div that needs to scroll if content overflows
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}
This fork of your fiddle shows my fix:
http://jsfiddle.net/strider820/84AsW/1/
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Get DOS path instead of Windows path
...e the short name of the current folder is returned).
Tested on Windows 7 x64.
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Convert data.frame column format from character to factor
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84
# To do it for all names
df[] <- lapply( df, factor) # the "[]" keeps the dataframe structur...
What are the differences between delegates and events?
...is not true. Here is an example: gist.github.com/Chiel92/36bb3a2d2ac7dd511b96
– Chiel ten Brinke
Dec 17 '15 at 11:02
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Converting Stream to String and back…what are we missing?
...e arbitrary bytes. You need to use something like a base-n (commonly: base-64) encode. This transfers
arbitrary bytes to a formatted string
a formatted string to the original bytes
look at Convert.ToBase64String and Convert. FromBase64String
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When should we use mutex and when should we use semaphore
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Here is how I remember when to use what -
Semaphore:
Use a semaphore when you (thread) want t...
Stop Visual Studio from mixing line endings in files
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On the File menu, choose Advanced Save Options, you can control it there.
Edit: Here's the doc...
detach all packages while working in R
...; sessionInfo()
R version 2.13.1 Patched (2011-09-13 r57007)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_GB.utf8 LC_NUMERIC=C
[3] LC_TIME=en_GB.utf8 LC_COLLATE=en_GB.utf8
[5] LC_MONETARY=C LC_MESSAGES=en_GB.utf8
[7] LC_PAPER=e...
Why is division in Ruby returning an integer instead of decimal value?
...o learn what works best. Here's the benchmark I put together: require 'base64';require 'zlib';puts Zlib.inflate(Base64.decode64("eJxlkMEOwiAQRO98hekFuGzxQEwPXvwR01ZqiYHqBk2Tln8XDlWgnDbM25nJonq9NaoD7ZTtR9PigxK09zM7AkgRHieXTYHOsBNf1nklM6B6TuhYpdp+rPgSdiCOi/d/kQ71QBOtAVFLEDly05+UYQ2H+MckL6z0zioDdJG1S9K...