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1. mk7087.github.io mk7087.github.io Public

2. simple-url simple-url Public

3. UUID v4 by windows batch license: CC0 UUID v4 by windows batch license: CC0

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   set /A a=%RANDOM% * 0x1000 / 0x8000

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   set /A b=%RANDOM% * 0x1000 / 0x8000

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   set /A c=%RANDOM% * 0x100  / 0x8000

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   set /A d=%RANDOM% * 0x100  / 0x8000

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   set /A e=%RANDOM% * 0x1000 / 0x8000

4. secure UUID v4 license: CC0 secure UUID v4 license: CC0

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   function uuidgen(){

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       let r = crypto.getRandomValues( new Uint8Array( 16 ) )

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       let R = 0n;

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       for( let i = 0n; i < r.length; i ++ ){

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           R += BigInt( r[ i ] ) * 0x100n ** i;