1 byte contains only 256 bits of information. Everyone make now Your own conclusions.

☏ : 372 5 3 9 0 0 6 6 0
E-mail : he1983912[@]mail.ee

Arno Welzel kirjutas Teisipäev, 23. november 2021 kl 12:52:33 UTC+2:
> An simplified example from a real project:
>
> if (!($this->action[$key] ?? false)) {
>
> What it means:
>
> 1) $this->action[$key] ?? false
>
> This return $this->action[$key] if $this->action[$key] exists and is not
> null or "false".
>
> 2) !( .... )
>
> Will negate the result - so the condition is true if $this->action[$key]
> does not exist or is null.
>
> However to understand this you must know what the ?? operator means and
> note the negation using ! in the beginning.
>
> When you did not create this code in the first place or try to find a
> bug expressions like this are not really helpful.
>
> I would prefer a longer but easier to understand solution like this:
>
> if (!isset($this->statusActions[$key])
> || null === $this->statusActions[$key]
> ) {
>
> Any thoughts on this?
>
>
> --
> Arno Welzel
> https://arnowelzel.de

Actually 1 byte contains 8 bits and can represent a number from 0 to 255

Stan

On 6/30/2022 10:21 PM, See Kes Seda Hetkel Siia Kirjutab wrote:
> 1 byte contains only 256 bits of information. Everyone make now Your own conclusions.
>
>
> ☏ : 372 5 3 9 0 0 6 6 0
> E-mail : he1983912[@]mail.ee
>
>
> Arno Welzel kirjutas Teisipäev, 23. november 2021 kl 12:52:33 UTC+2:
>> An simplified example from a real project:
>>
>> if (!($this->action[$key] ?? false)) {
>>
>> What it means:
>>
>> 1) $this->action[$key] ?? false
>>
>> This return $this->action[$key] if $this->action[$key] exists and is not
>> null or "false".
>>
>> 2) !( .... )
>>
>> Will negate the result - so the condition is true if $this->action[$key]
>> does not exist or is null.
>>
>> However to understand this you must know what the ?? operator means and
>> note the negation using ! in the beginning.
>>
>> When you did not create this code in the first place or try to find a
>> bug expressions like this are not really helpful.
>>
>> I would prefer a longer but easier to understand solution like this:
>>
>> if (!isset($this->statusActions[$key])
>> || null === $this->statusActions[$key]
>> ) {
>>
>> Any thoughts on this?
>>
>>
>> --
>> Arno Welzel
>> https://arnowelzel.de

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On Fri, 1 Jul 2022 01:05:37 -0400, Stan Weiss wrote:
> Actually 1 byte contains 8 bits and can represent a number from 0 to 255

Actually s/number/value/

Yes, there are times the value will be looked at as -127 to +127

Stan

On 7/1/2022 8:18 AM, Allodoxaphobia wrote:
> On Fri, 1 Jul 2022 01:05:37 -0400, Stan Weiss wrote:
>> Actually 1 byte contains 8 bits and can represent a number from 0 to 255
> Actually s/number/value/
>

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On Fri, 1 Jul 2022 09:08:31 -0400 Stan Weiss <srweiss@erols.com> wrote:
> On 7/1/2022 8:18 AM, Allodoxaphobia wrote:
> > On Fri, 1 Jul 2022 01:05:37 -0400, Stan Weiss wrote:
> >> Actually 1 byte contains 8 bits and can represent a number from 0
> >> to 255
> > Actually s/number/value/
>
> Yes, there are times the value will be looked at as -127 to +127

Actually -128 to +127 because values are evaluated in 2's complement.

Mateusz