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String

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Reference:learnvimscriptthehardway.stevelosh.com

Vim:help str2float()

Basic usage

vim

let mystr = 'somestring'
let mystr = 'concatenate ' .. 'strings'
let char = mystr[-10]

Function	Description
`split(str, delimiter)`	Splits the string using a delimiter, which defaults to space.
`strlen(str)`	Returns the length of the string.
`tolower(str)`	Returns a copy with all characters turned into lower case.
`toupper(str)`	Returns a copy with all characters turned into upper case.

Examples:

vim

let mylist = split(mystr)       " Space is used by default
let mylist = split(mystr, ',')
let is_empty = !strlen(mystr)

By default, the comparison case-sensitiveness depends on user configuration.

Append # to make it case-sensitive, or ? to make it case-insensitive.

vim

mystr ==# 'text'
mystr !=# 'text'

For regex, replace the second = with ~:

vim

mystr =~# '^t'  " Starts with t
mystr !~# '^t'  " Does not start with t