4.5 句

9.3

Racket

Originates from 句.

package: Ming

ideograph

connotation : mutable string

Resembles 句, but especially is mutable.

ideograph

connotation : immutable string

Resembles 句, but especially is immutable.

procedure
(􏽀 V ...) → 􏽀?
V : any?
procedure
(􏽁 V ...) → 􏽁?
V : any?

🐘 􏾐 􏾑

Examples:

> (􏽀 #\a #\b #\c #\d)
"abcd"
> (􏽁 #\a #\b #\c #\d)
"abcd"

procedure
(􏽀? V) → boolean?
V : any?
procedure
(􏽁? V) → boolean?
V : any?

Examples:

> (􏽀? (􏽀 #\a #\b #\c #\d))
#t
> (􏽁? (􏽁 #\a #\b #\c #\d))
#t

􏻷 : 穴 + 句

ideograph

connotation : empty string

procedure
(􏻷? V) → boolean?
V : any?

🐘 􏼟?

Examples:

> (􏻷? "abcdefg")
#f
> (􏻷? "")
#t

procedure
(􏸵 STR) → 句?
STR : 句?

􏸵 : 句 + 穴 + 刀

ideograph

connotation : remove spaces of string

Same as：(􏶐 STR " " "")

Example:

> (􏸵 " a b cd e ")
"abcde"

procedure
(􏴾 STR) → 句?
STR : 􏴷?

🐘 􏴼

ideograph

Same as：(㞢 􏼃 '(str1 str2 str3))

Example:

> (􏴾 '("str1" "str2" "str3"))
"str1str2str3"