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What is that “total” in the very first line after ls -l? [closed]
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MatMat
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Git keeps asking me for my ssh key passphrase
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edited Aug 9 '19 at 8:51
Étienne
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answered A...
How does C compute sin() and other math functions?
...ently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x).
This code is very complex. No one software algorithm is as fast as possible and also accurate over the whole range of x values, so the library implements several different algori...
Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
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One wo...
Force R not to use exponential notation (e.g. e+10)?
...he most direct way is to use sprintf() with explicit width e.g. sprintf("%.5f", ran2).
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Check if a number has a decimal place/is a whole number
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853
Using modulus will work:
num % 1 != 0
// 23 % 1 = 0
// 23.5 % 1 = 0.5
Note that this is ba...
Get the device width in javascript
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You can get the device screen width via the screen.width property.
Sometimes it's also useful to...
How to grep and replace
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Another option is to use find and then pass it through sed.
find /path/to/files -type f -exec ...
Mechanisms for tracking DB schema changes [closed]
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In the Rails world, there's the concept of migrations, scripts in which changes to the database...