JS - Format number to currency

This method gets vowels (‘a’, ‘e’, ‘i’, ‘o’, ‘u’) found in a string.
   
#make a function:
def get_vowels(string):

#return is the keyword which means function have to return value: 
 return [each for each in string if each in 'aeiou']


#assign the words and function will return vowels words.
get_vowels('foobar') # ['o', 'o', 'a']


get_vowels('gym') # []

javascript:(d=>{var css=`:root{background-color:#f1f1f1;filter:invert(1) hue-rotate(180deg)}img:not([src*=".svg"]),picture,video{filter: invert(1) hue-rotate(180deg)}`,style,id="dark-mode",ee=d.getElementById(id);if(null!=ee)ee.parentNode.removeChild(ee);else {style = d.createElement('style');style.type="text/css";style.id=id;if(style.styleSheet)style.styleSheet.cssText=css;else style.appendChild(d.createTextNode(css));(d.head||d.querySelector('head')).appendChild(style)}})(document)

def when(predicate, when_true):
  return lambda x: when_true(x) if predicate(x) else x
  
EXAMPLES
double_even_numbers = when(lambda x: x % 2 == 0, lambda x : x * 2)
double_even_numbers(2) # 4
double_even_numbers(1) # 1

def unfold(fn, seed):
  def fn_generator(val):
    while True: 
      val = fn(val[1])
      if val == False: break
      yield val[0]
  return [i for i in fn_generator([None, seed])]
  
  
EXAMPLES
f = lambda n: False if n > 50 else [-n, n + 10]
unfold(f, 10) # [-10, -20, -30, -40, -50]

/**
* Rewrites text
* @param {String} text The text to rewrite.
* @returns {Promise.<String[]>} Resolves into a list of about 10 rewritten versions. (Or rejects with an error)
* @example 
* var rewritten  = await rewrite("Sometimes I just want to code in JavaScript all day.");
* // ⇒ [
* //    "I sometimes just want to code JavaScript all day.",
* //    "JavaScript is my favorite programming language sometimes.",
* //    "I sometimes wish I could code in JavaScript all day.",
* //    "JavaScript is sometimes all I want to do all day.",
* //    "I like JavaScript sometimes and want to code all day long.",
* //    "Some days I just want to work all day in JavaScript.",
* //    "It's not uncommon for me to just want to code in JavaScript all day.",
* //    "My favorite thing to do sometimes is just code JavaScript all day.",
* //    "My favourite coding language is JavaScript, which I can code all day.",
*//     "JavaScript is my preferred language sometimes, since it lets me code all day.",
*// ];
*/
function rewrite(text) {
  return new Promise(async (resolve, reject) => {
    var { suggestions, error_code, error_msg, error_msg_extra } = await fetch(
      "https://api.wordtune.com/rewrite-limited",
      {
        headers: {
          accept: "*/*",
          "accept-language": "en-US,en;q=0.9",
          "content-type": "application/json",
          "x-wordtune-origin": "https://www.wordtune.com",
        },
        referrer: "https://www.wordtune.com/",
        body: JSON.stringify({
          action: "REWRITE",
          text: text,
          start: 0,
          end: text.length,
          selection: {
            wholeText: text,
            start: 0,
            end: text.length,
          },
        }),
        method: "POST",
      }
    ).then((res) => res.json());
    if (error_code || error_msg || error_msg_extra) {
      reject({
        code: error_code,
        message: error_msg,
        message_extra: error_msg_extra,
      });
    } else {
      resolve(suggestions);
    }
  });
}

from functools import reduce

def compose(*fns):
  return reduce(lambda f, g: lambda *args: f(g(*args)), fns)


EXAMPLES
add5 = lambda x: x + 5
multiply = lambda x, y: x * y
multiply_and_add_5 = compose(add5, multiply)

multiply_and_add_5(5, 2) # 15

#define a function 
 1.Def cube(num)
      #write the formula of cube
      2.return num*num*num
     #give the number to calculate the cube 
     3.cube(3)
   # print the cube of that number simply by using print command
    4.print(cube(3))
     5.“return” keyword means that function have to return value         

#define function
defall_unique(lst):

   return len(lst) == len(set(lst))
   
x = [1,1,2,2,3,2,3,4,5,6]


y = [1,2,3,4,5]


all_unique(x) # False
all_unique(y) # True

 # give a name of function after def
 1.def sayhi():
      #put the statement in the function  
     2.print(“hello world”)
#call function by name:
3.sayhi()


Output: 
Hello world

#define a function 
 Def cube(num)
      #write the formula of cube
      return num*num*num
     #give the number to calculate the cube 
     cube(3)
   # print the cube of that number simply by using print command
    print(cube(3))
     “return” keyword means that function have to return          value

Use functools.reduce() to perform right-to-left function composition. The last (rightmost) function can accept one or more arguments; the remaining functions must be unary.
from functools import reduce

1.def compose(*fns):
  2.return reduce(lambda f, g: lambda *args: f(g(*args)), fns)
EXAMPLES
add5 = lambda x: x + 5
multiply = lambda x, y: x * y
multiply_and_add_5 = compose(add5, multiply)

multiply_and_add_5(5, 2) # 15

def byte_size(string):

  return(len(string.encode('utf-8')))

byte_size('😀’) # 4
byte_size('Hello World') # 11

add_action( 'wp_body_open', 'wpdoc_add_custom_body_open_code' );
 
function wpdoc_add_custom_body_open_code() {
    echo '<!-- Google Tag Manager (noscript) --> ... <!-- End Google Tag Manager (noscript) -->';
}

for c in df_drop.columns:
    df_drop[c] = df_drop[c].str.replace('[^\w\s]+', '')
df_drop = df_drop.astype(str)
df_drop.head()

rmsval = df.loc[:, 'c1':'c4']
def getrms(row):  
  a = np.sqrt(sum(row**2/4))
  return a
df['rms'] = df.apply(getrms,axis=1)
df.head()