Implement new string methods

[szaghi]

desiderata new methods

Python-str-like methods

• [x] UPPER/lower case transformation
• [x] capitalize
• [x] end_with suffix check
• [x] start_with prefix check
• [x] is_digit
• [x] is_upper/is_lower
• [x] partition
• [x] replace
• [x] split
• [x] strip
• [x] swapcase

Assignments

• [x] from string
• [x] from characters
• [x] from integer (any kinds)
• [x] from real (any kinds)

Miscellanea

• [x] unique
• [x] basename like filter
• [x] basedir like filter
• [x] extension filter
• [x] free
• [x] is_number
• [x] is_integer
• [x] is_real
• [x] reverse
• [x] escape
• [x] unescape
• [x] join
• [ ] encode/decode utf8
• [x] encode/decode base64
• [x] startcase
• [x] camelcase
• [x] snakecase
• [x] fill
• [x] number (cast to number)
• [x] insert
• [x] search (for a substring enclosed into start/end tags, e.g. xml like)
• [x] listdir or glob to list files in directories
• [x] generate random name for temporary files

LeetCode methods

• [ ] zigzag-conversion
• [ ] longest-common-prefix
• [ ] compare-version-numbers
• [ ] reverse-words-in-a-string
• [ ] length-of-last-word
• [ ] text-justification
• [ ] valid-anagram
• [ ] convert-a-number-to-hexadecimal

References

[1] John Burkardt's collection.

[1a] chrpak [1b] stripper

[2] ISO_VARYING_STRING and recent variation of it by Ian Harvy.