nv-string-s2n v0.0.2

nv-string-s2n

• parse a string to a number, same as eval("1.1....")

• support 0b|0B 0o|0O 0x|0X , bigInt, double, NaN , Infinity , -Infinity JUST Like parseFloat DO;

• support lodash _ seperator, loose rule, NOT so strict as parseFloat;

• extra support 0q|0Q, it means radix 4

• NOT support oct-using-leading-0-without-oO, such as 034

• IF meet BigDemical, it do NOTHING just return a pair "maybe_big_demical",\<the-original-string>

• this pkg is SLOW( 50 times slower than parseFloat/parseInt/Number/BigInt ) , should ONLY be used in repl/cli TOOLS , its just for test the state-transfer when parseFloat.

• but its faster than eval

• it is USED for test 0q123 0Q123 in nvlang, nvlang support int-number-literal-of-radix-4

install

• npm install nv-string-s2n

usage

  const parse_numlike   = require("nv-string-s2n");

example

			>               parse_numlike("0b111_001")
			57
			>               parse_numlike("0q12_30")
			108
			>               parse_numlike("-0o567")
			-375
			>               parse_numlike("-0xabcdef")
			-11259375
			> 
			>               parse_numlike("0b111_001n")
			57n
			>               parse_numlike("0q12_30n")
			108n
			>               parse_numlike("-0o567n")
			-375n
			>               parse_numlike("-0xabcdefn")
			-11259375n
			> 
			> 
			>                parse_numlike("1.1")
			1.1
			>                parse_numlike("-1.1E200")
			-1.1e+200
			> 
			>                parse_numlike("0b_11_10")
			14
			>                parse_numlike("0b123")
			Uncaught 'for bin:  only 0b[10_]+n? is valid'
			> 
			> 

TEST

long 0b

	TEST# node b.js 100000
	{ rounds: 1, f: [Function: using_Number], costed: 23.86091709136963 }
	{ rounds: 1, f: [Function: using_s2n], costed: 479.0749931335449 }
	{ rounds: 1, f: [Function: using_eval], costed: 670.5458121299744 }

short 0b

	TEST# node short-b.js 100000
	{ rounds: 1, f: [Function: using_Number], costed: 9.460304737091064 }
	{ rounds: 1, f: [Function: using_s2n], costed: 6.899360656738281 }
	{ rounds: 1, f: [Function: using_eval], costed: 64.11680889129639 }
	root@dli:/mnt/sda3/NV6-/nvstr/pkgs/nv-string-s2n/TEST# 

METHODS

APIS

LICENSE

• ISC