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Multiline strings in JSON
...for escaping the backslash, otherwise python will treat \n as
the control character "new line"
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Understanding recursion [closed]
.... We'll use a binary tree of nodes, but this time the value held will be a character, not a number.
Our tree will have a special property, that for any node, its character comes after (in alphabetical order) the character held by its left child and before (in alphabetical order) the character held ...
How to pattern match using regular expression in Scala?
... Some(p.Jo.StartsWith(fn)),
Some(p.`.*(\\w)$`.Regexp(lastChar))) =>
println(s"Match! $fn ...$lastChar")
case _ => println("nope")
}
}
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What are carriage return, linefeed, and form feed?
What is the meaning of the following control characters:
12 Answers
12
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Smart way to truncate long strings
...rd" and "soft" limits, like, for example, if the string is longer than 500 character, truncate it to 400. This may be useful, when the user wants to see the whole text and clicks some link for it. If, as a result, you load just 1 or 2 chars more, it will look really ugly.
– Max...
How to capitalize the first letter in a String in Ruby
...ия.
If you're using Rails there's an easy workaround:
"мария".mb_chars.capitalize.to_s # requires ActiveSupport::Multibyte
Otherwise, you'll have to install the unicode gem and use it like this:
require 'unicode'
Unicode::capitalize("мария") #=> Мария
Ruby 1.8:
Be sure t...
Can hash tables really be O(1)?
...TW - concrete example - Visual C++'s std::hash of textual keys combines 10 characters evenly spaced along the text into the hash value, so it's O(1) regardless of text length (but massively more collision prone than GCC!). Separately, claims of O(1) have another assumption (normally correctly) that...
Minimal web server using netcat
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From man for nc, -p description: It is an error to use this option in conjunction with the -l option
– sbeliakov
Nov 24 '16 at 14:59
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What's the most efficient test of whether a PHP string ends with another string?
...slower due to more testing.
Probably the most efficient way is to do loop char-by-char from the -sterlen(test) position till the end of the string and compare. That's the minimal amount of comparisons you can hope to do and there's hardly any extra memory used.
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Calculating Distance between two Latitude and Longitude GeoCoordinates
...atic double DistanceTo(double lat1, double lon1, double lat2, double lon2, char unit = 'K')
{
double rlat1 = Math.PI*lat1/180;
double rlat2 = Math.PI*lat2/180;
double theta = lon1 - lon2;
double rtheta = Math.PI*theta/180;
double dist =
Math.Sin(rlat1)*Math.Sin(rlat2) + M...