This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+21C7 forms with similar adjacent characters prevents a line break inside it.
The CLDR project calls this character “para strzałek w lewo” for use in screen reading software.
Wikipedia ma następujące informacje na temat tej współrzędnej kodowej:
An arrow is a graphical symbol, such as ← or →, or a pictogram, used to point or indicate direction. In its simplest form, an arrow is a triangle, chevron, or concave kite, usually
affixed to a line segment or rectangle, and in more complex forms a representation of an actual arrow (e.g. ➵ U+27B5). The direction indicated by an arrow is the one along the length of the line or rectangle toward the single pointed end.
Reprezentacje
System
Reprezentacje (click value to copy)
Nº
8647
UTF-8
E2 87 87
UTF-16
21 C7
UTF-32
00 00 21 C7
Adres URL cytowany
%E2%87%87
HTML hex reference
⇇
Błędne windows-1252 Mojibake
⇇
HTML named entity
⇇
HTML named entity
⇇
Kodowanie: GB18030 (hex bajtów)
81 36 CB 39
LATEX
\leftleftarrows
RFC 5137
\u'21C7'
Bash and Zsh inside echo -e
\u21C7
C and C++
\u21C7
C#
\u21C7
CSS
\0021C7
Excel
=UNICHAR(8647)
Go
\u21C7
JavaScript
\u21C7
Modern JavaScript since ES6
\u{21c7}
JSON
\u21C7
Java
\u21C7
Lua
\u{21C7}
Matlab
char(8647)
Perl
"\x{21C7}"
PHP
\u{21c7}
PostgreSQL
U&'\21C7'
PowerShell
`u{21C7}
Python
\u21C7
Ruby
\u{21c7}
Rust
\u{21c7}
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