jaquinocode

## markdown-details-collapsible.md

      
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                jaquinocode
                / markdown-details-collapsible.md
            
            
              Created
              January 31, 2022 22:53
                — forked from pierrejoubert73/markdown-details-collapsible.md
            
              
                How to add a collapsible section in markdown.
              
          
    A collapsible section containing markdown


  Click to expand!
Heading


A numbered
list

With some
Sub bullets


## previous_current_iterator.py
from itertools import tee, chain

# ABC -> (None, A) (A, B) (B, C)
def prev_curr_iter(iterable):
    a, b = tee(iterable)
    return zip(chain([None], a), b)

# use case
for prev, curr in prev_curr_iter("ABC"):
    print(f"{prev=}\t{curr=}")

## getDefault.js
const getDefault = (o, key, defaultVal) => key in o ? o[key] : o[key] = defaultVal

// Prototype version of above. Allows for usage: o.getDefault(key, def)
Object.defineProperty(Object.prototype, "getDefault", {
  value: function(key, defaultVal) {
    return key in this ? this[key] : this[key] = defaultVal
  }
})

## indexOfMin.js
const indexOfMin = numbers => {
  return numbers.indexOf(Math.min(...numbers))
}

## rangeForJavascript.js
function* range(start, stop, step=1) {
    if(typeof stop === 'undefined') [start, stop] = [0, start]
    for(let i = start; step > 0 ? i < stop : i > stop; i += step)
        yield i
}

/*
[...range(0, 10, 2)]
[0, 2, 4, 6, 8]

## int_float_or_string_checker.py
def int_float_or_string(string):
    try:
        int(string)  # strict and nice
        return int
    except ValueError:
        # float() is too permissive, this is better
        return float if is_strictly_float(string) else str

def is_strictly_float(string):
    if string.startswith("-"):
	from itertools import tee, chain

	# ABC -> (None, A) (A, B) (B, C)
	def prev_curr_iter(iterable):
	a, b = tee(iterable)
	return zip(chain([None], a), b)

	# use case
	for prev, curr in prev_curr_iter("ABC"):
	print(f"{prev=}\t{curr=}")
	const getDefault = (o, key, defaultVal) => key in o ? o[key] : o[key] = defaultVal

	// Prototype version of above. Allows for usage: o.getDefault(key, def)
	Object.defineProperty(Object.prototype, "getDefault", {
	value: function(key, defaultVal) {
	return key in this ? this[key] : this[key] = defaultVal
	}
	})
	const indexOfMin = numbers => {
	return numbers.indexOf(Math.min(...numbers))
	}
	function* range(start, stop, step=1) {
	if(typeof stop === 'undefined') [start, stop] = [0, start]
	for(let i = start; step > 0 ? i < stop : i > stop; i += step)
	yield i
	}

	/*
	[...range(0, 10, 2)]
	[0, 2, 4, 6, 8]
	def int_float_or_string(string):
	try:
	int(string) # strict and nice
	return int
	except ValueError:
	# float() is too permissive, this is better
	return float if is_strictly_float(string) else str

	def is_strictly_float(string):
	if string.startswith("-"):