DEV Community: Samandar Ravshanov

📦 Transform a camelized/dasherized/underscored/etc string into a readable string

Samandar Ravshanov — Thu, 01 Aug 2019 14:16:29 +0000

from functorflow import f

print(f('clean-string', 'fooBar'))
# 'Foo bar'

print(f('clean-string', 'lorem-ipsum'))
# 'Lorem ipsum'


print(f('clean-string', 'BigBang_theory'))
# 'Big bang theory'

📦 CIEDE2000 color difference algorithm

Samandar Ravshanov — Thu, 01 Aug 2019 13:43:20 +0000

from functorflow import ff

# ------ Returns the closest color ---------

color = { 'R': 255, 'G': 1, 'B': 30 }

#  red, green, blue

palette = [ {'R': 255, 'G': 0, 'B': 0 },
            {'R': 0, 'G': 255, 'B': 0 },
            {'R': 0, 'G': 0, 'B': 255} ]

print(ff('color-diff').closest(color, palette))
# {R: 255, G: 0, B: 0 }, red



# ------ Return the most different color -----------

color = { 'R': 255, 'G': 255, 'B': 255 };
# black, white
palette = [ {'R': 0, 'G': 0, 'B': 0 }, {'R': 255, 'G': 255, 'B': 255 } ];

print(ff('color-diff').furthest(color, palette)) 
# {'R': 0, 'G': 0, 'B': 0 }, black

📦 Convert relative file system paths into safe URI paths

Samandar Ravshanov — Thu, 01 Aug 2019 09:31:50 +0000

from functorflow import f

# Properly encode URI path segments
r = f('uri-path', '../abc/@#$%¨&()[]{}-_=+ß/môòñ 月 قمر')
print(r)
# -> '../abc/%40%23%24%25%C2%A8%26()%5B%5D%7B%7D-_%3D%2B%C3%9F/m%C3%B4%C3%B2%C3%B1%20%E6%9C%88%20%D9%82%D9%85%D8%B1'


# Also supports paths with Windows directory separators
print(f('uri-path', 'a\\b\\c'))
# -> 'a/b/c'

📦 Generates inverted (opposite) version of the given color

Samandar Ravshanov — Thu, 01 Aug 2019 07:13:04 +0000

from functorflow import f

print(f('invert-color', '#000')) 
#ffffff

print(f('invert-color', '#282b35'))
# '#d7d4ca'

# input color as RGB array or object

print(f('invert-color', [69, 191, 189]))
# '#ba4042'

print(f('invert-color', { 'r': 249, 'g': 119, 'b': 121 })) 
# '#068886'


# amplify to black or white
print(f('invert-color', '#282b35', bw=True))
# '#ffffff'


# amplify to custom black or white color
print(f('invert-color', '#282b35', bw={ 'black': '#3a3a3a', 'white': '#fafafa' }))     # —> #fafafa

# amplify with custom luminance threshold (default is invert.defaultThreshold = ~0.179)
print(f('invert-color', '#282b35', bw={ 'black': '#3a3a3a', 'white': '#fafafa', 'threshold': 0.01 }))     
# #3a3a3a

📦 Convert a time string to seconds: '00:22:17' → 1337

Samandar Ravshanov — Wed, 31 Jul 2019 22:41:05 +0000

from functorflow import f

print(f('sec', '00:22:17'))
# '1337'

📦 Strip ANSI escape codes from a string

Samandar Ravshanov — Wed, 31 Jul 2019 22:28:38 +0000

from functorflow import f

r = f('strip-ansi', '\u001B[4mUnicorn\u001B[0m')
print(r) # 'Unicorn'

📦 Formats a string based on a pattern.

Samandar Ravshanov — Wed, 31 Jul 2019 22:21:53 +0000

from functorflow import f

print(f('format-str', 'YYYY-MM-DD', '20190508'))
# '2019-05-08'


print(f('format-str', '2019-05-08', '20151217'))
# '2015-12-17'

📦 Check if the given string is a POSIX bracket expression.

Samandar Ravshanov — Wed, 31 Jul 2019 21:34:11 +0000

Returns True if the given string is a POSIX bracket expression (POSIX character class)

from functorflow import f

print(f('is-posix-bracket', '[foo:]]'))
# False
print(f('is-posix-bracket', '[xdigit:]]'))
# False
print(f('is-posix-bracket', '[[:xdigit:]]'))
# True
print(f('is-posix-bracket', '[[:xdigit:]]'))
# True
print(f('is-posix-bracket', '[[:alpha:]123]'))
# True
print(f('is-posix-bracket', '[[:alpha:]123]'))
# True
print(f('is-posix-bracket', '[a-c[:digit:]x-z]'))
# True
print(f('is-posix-bracket', '[:al:]'))
# True
print(f('is-posix-bracket', '[abc[:punct:][0-9]'))
# True

📦Regular expression for matching HTML comments

Samandar Ravshanov — Wed, 31 Jul 2019 21:17:28 +0000

from functorflow import f

#Regular expression for matching HTML comments

with_comment = '<!DOCTYPE html><!--[if lt IE 7]>      <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--><html lang="en"><head><meta charset="UTF-8"><title>Document</title></head><body></body></html>'

no_comment = '<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Document</title></head><body></body></html>'


print(f('html-comment', with_comment)) # True

print(f('html-comment', no_comment)) # False

📦 Check if a string is an IP address in CIDR notation

Samandar Ravshanov — Wed, 31 Jul 2019 20:54:21 +0000

from functorflow import f

# Check if input is a IPv4 or IPv6 CIDR address. Returns either 4, 6 (indicating the IP version) or 0 if the string is not a CIDR.

print(f('cidr', '192.168.0.1/24')) # 4
print(f('cidr', '1:2:3:4:5:6:7:8/64')) # 6
print(f('cidr', '10.0.0.0')) # 0

# Check if input is a IPv6 CIDR address. Returns a boolean.

print(f('cidr.v6', '10.0.0.0/24')) # False

# Check if input is a IPv4 CIDR address. Returns a boolean.

print(f('cidr.v4', '10.0.0.0/24')) # True

📦Generate string from URL pattern

Samandar Ravshanov — Sun, 28 Jul 2019 21:41:31 +0000

from functorflow import ff

# Generate string from URL pattern and values:


pattern = ff("make-url-pattern", pattern="/api/products(/:id)")
res = pattern.stringify( vals={ "id": 43 } ) 

print(res) # '/api/products/43'



# Match pattern against string and extract values:

pattern = ff("make-url-pattern", pattern="/api/products(/:id)")
res = pattern.match( url="/api/products/5" ) 

print(res) # {'id': '5'}

Stop wasting time installing and configuring Python libraries. Use them right away. 📦FunctorFlow instantly auto-install and auto-config them for you.

📦CSS unit converter

Samandar Ravshanov — Sun, 28 Jul 2019 21:31:17 +0000

from functorflow import ff, f

# CSS unit converter: px, cm, mm, in, pt, pc, deg, grad, rad, turn, s, ms, Hz, kHz, dpi, dpcm, dppx.

# ---- ff 

# px to cm
r = ff('css-unit').cm(px=10)
print(r) # 0.26458

# ----- f

# px to cm
r = ff('css-unit.cm', px=10)
print(r) # 0.26458

Stop wasting time installing and configuring Python libraries. Use them right away. 📦FunctorFlow instantly auto-install and auto-config them for you.