Create a string from a sequence of Unicode code points.
npm install @stdlib/string-from-code-pointvar fromCodePoint = require( '@stdlib/string-from-code-point' );Creates a string from a sequence of Unicode code points.
var out = fromCodePoint( 9731 );
// returns '☃'In addition to providing code points as separate arguments, the function supports providing an array-like object as a single argument containing a sequence of code points.
var Uint16Array = require( '@stdlib/array-uint16' );
var out = fromCodePoint( 97, 98, 99 );
// returns 'abc'
out = fromCodePoint( new Uint16Array( [ 97, 98, 99 ] ) );
// returns 'abc'-
This function differs from
String.fromCharCodein the following ways:- The function provides support for all valid Unicode values (up to
21bits). While most common Unicode values can be represented using one 16-bit unit, higher code point characters require two 16-bit units (a surrogate pair consisting of a high and a low surrogate) to form a single character.String.fromCharCodedoes not support surrogate pairs, supporting only UCS-2, a subset of UTF-16.
- The function provides support for all valid Unicode values (up to
-
This function differs from
String.fromCodePointin the following ways:- The function supports explicitly providing an array-like
objectcontaining a sequence of code points. - The function requires at least one code point.
- The function requires that all code points be nonnegative integers. The function does not support values, such as
null,undefined,true,false,'0','1', etc., which can be cast to integer values.
- The function supports explicitly providing an array-like
var randu = require( '@stdlib/random-base-randu' );
var floor = require( '@stdlib/math-base-special-floor' );
var UNICODE_MAX_BMP = require( '@stdlib/constants-unicode-max-bmp' );
var fromCodePoint = require( '@stdlib/string-from-code-point' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = floor( randu()*UNICODE_MAX_BMP );
console.log( '%d => %s', x, fromCodePoint( x ) );
}To use the module as a general utility, install the module globally
npm install -g @stdlib/string-from-code-pointUsage: from-code-point [options] [<code_point> <code_point> ...]
Options:
-h, --help Print this message.
-V, --version Print the package version.
--split sep Delimiter for stdin data. Default: '/\\r?\\n/'.
-
If the split separator is a regular expression, ensure that the
splitoption is either properly escaped or enclosed in quotes.# Not escaped... $ echo -n $'97\n98\n99' | from-code-point --split /\r?\n/ # Escaped... $ echo -n $'97\n98\n99' | from-code-point --split /\\r?\\n/
-
The implementation ignores trailing delimiters.
$ from-code-point 9731
☃To use as a standard stream,
$ echo -n '9731' | from-code-point
☃By default, when used as a standard stream, the implementation assumes newline-delimited data. To specify an alternative delimiter, set the split option.
$ echo -n '97\t98\t99\t' | from-code-point --split '\t'
abcThis package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
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See LICENSE.
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