Merge pull request #101 from skelly37/main

Initial PR for mathematical functions and constants

cool_oneliners/dict.nu

@@ -0,0 +1,16 @@
+#As the name suggests, the function returns you the definition and example of the sought English word 
+#(or breaks if it can't find the word because the API uses different columns for successful and invalid searches)
+
+#usage: dict word
+#usage: dict "word with space"
+
+def dict [word: string] {
+  let link = (build-string 'https://api.dictionaryapi.dev/api/v2/entries/en/' ($word|str find-replace ' ' '%20'))
+  let output = (fetch $link |
+  rename word)
+  
+  if $output.word == "No Definitions Found" {echo $output.word} {echo $output | 
+  get meanings.definitions |
+  select definition example
+  }
+}

data_extraction/ultimate_extractor.nu

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+#As in the file name, the script is designed to conveniently handle any archive format
+
+#usage: extract archive_name
+
+def extract [name:string] {
+  let exten = [ [ex com];
+                ['.tar.bz2' 'tar xjf']
+                ['.tar.gz' 'tar xzf']
+                ['.bz2' 'bunzip2']
+                ['.rar' 'unrar x']
+                ['.tbz2' 'tar xjf']
+                ['.tgz' 'tar xzf']
+                ['.zip' 'unzip']
+                ['.7z' '/usr/bin/7z x']
+                ['.deb' 'ar x']
+                ['.tar.xz' 'tar xvf']
+                ['.tar.zst' 'tar xvf']
+                ['.tar' 'tar xvf']
+                ['.gz' 'gunzip']
+                ['.Z' 'uncompress']
+                ]
+  
+  let command = ($exten|where $name =~ $it.ex|first)
+  if ($command|empty?) {
+    echo 'Error! Unsupported file extension'
+  } {
+    nu -c (build-string $command.com ' ' $name)
+  }
+}

maths/math_functions.nu

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+#!/usr/bin/nu
+# made by @skelly37 for everyone :)
+#
+# (sqrt skipped because of math module from nushell)
+#
+# BE CAREFUL WITH ROOTS MADE ON BIG NUMBERS (10 digits and more) — the result is rounded so you may get wrong result.
+# just modify the round -p or calculate it manually
+
+# cube root
+def croot [num: number] {
+	$num ** ( 1 / 3 ) | math round -p 10
+}
+
+# root with custom denominator, e.g. 2 ** 1/4
+def root [ denominator: number, num: number ] {
+	$num ** ( 1 / $denominator ) | math round -p 10
+}
+
+# totally custom root, e.g. 2 ** 3/8
+def aroot [ scaler: number, denominator: number, num: number ] {
+	$num ** ($scaler / $denominator) | math round -p 10
+}
+
+#discriminant of a quadratic equation
+def delta [ a: number, b: number, c: number ] {
+	( $b ** 2 ) - ( 4 * $a * $c)
+}
+
+#factorial of a given number, works fine only for n<21 (integer range)
+def fact [num:number] {
+	if $num >= 0 { if $num < 2 {$num} {seq 2 $num | math product} } { echo 'Error: can only calculate non-negative integers'}
+}
+
+#TODO:
+# -sin, cos, tan table for 0-90 degrees
+# -radians to degrees and reversed
+# -sin, cos, tan, ctg, sec, cosec functions