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Printf width specifier to maintain precision of floating-point value
...sense, but simply to define the number of digits after the decimal point. 1234567890.123, mathematically has 13 digits of precision or significant digits. 0.000000000123 has 3 digits of mathematical precision, not 13. Floating point numbers are logarithmically distributed.This answer uses signific...
Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
... var button: UIButton!
var buttonOriginalWidth: CGFloat!
override func awakeFromNib() {
self.buttonOriginalWidth = self.button.frame.size.width
}
}
Here, you cannot calculate the original width of the button until the view loads, but you know that awakeFromNib will be called b...
Static methods in Python?
...dited Dec 14 '15 at 0:29
hichris123
9,5151212 gold badges5050 silver badges6666 bronze badges
answered Apr 10 '09 at 16:00
...
How to open a specific port such as 9090 in Google Compute Engine
...ol and ports. Enter all or a comma delimited list of ports, such as 67-69, 123.
Select Other protocols to include protocols such as icmp or sctp.
(Optional) You can create the firewall rule but not enforce it by setting its enforcement state to disabled. Click Disable rule, then select Disabled.
(...
Record file copy operation with Git
...th change tracking in a range. Git log allows a range argument (git log -L123,456:file.xyz) that properly follows renames, but not copies, and you can't pass --follow in that case; also, AFAICT, this doesn't work with git blame.
– Clément
Jan 10 at 20:48
...
Closing multiple issues in Github with a commit message
... documentation: Linking a pull request to an issue
Resolves #10, resolves #123, resolves octo-org/octo-repo#100
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Sass - Converting Hex to RGBa for background opacity
...
123
There is a builtin mixin: transparentize($color, $amount);
background-color: transparentize(#...
How do I replace NA values with zeros in an R dataframe?
...ce(., is.na(.), 0))
The Complete Analysis -
Updated for dplyr 0.8.0: functions use purrr format ~ symbols: replacing deprecated funs() arguments.
Approaches tested:
# Base R:
baseR.sbst.rssgn <- function(x) { x[is.na(x)] <- 0; x }
baseR.replace <- function(x) { replace(x, is...
How is Math.Pow() implemented in .NET Framework?
... things up, I decided to take a look at the implementation of Math.Pow() function. But in .NET Reflector , all I found was this:
...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...the privileges you already granted, e.g. run mysql -u root -p -h 192.168.1.123 or whichever local IP address your box have.
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