Yeah, I know that it doesn't actually mutate. But it *feels* like it does,
which is the issue.
Trevor
On Sat, Aug 9, 2014 at 4:37 PM, Henrik Lindberg <
henrik.lindb...@cloudsmith.com> wrote:
> On 2014-09-08 21:12, Trevor Vaughan wrote:
>
>> I tend to avoid += since it's a "magic" edge case in variable scope.
>>
>> If all of my code takes the strict view that variables are immutable, I
>> am much less likely to confuse anyone who reads my code later.
>>
>>
> Just to be clear, the += does *not* mutate, it creates a new variable that
> shadows the original in an outer scope.
>
>
> This does end up with stupid code like $l_var = $var + ['foo'], but that
>> can't be helped while preserving clarity.
>>
>> Now, I would LOVE the ability to manipulate all variables within scope.
>> That would be very nice and then I would vote for keeping += around.
>>
>> That would allow for things like:
>>
>> if empty($foo) {
>> $foo = 'bar'
>> }
>>
>> Instead of:
>>
>> if empty($foo) {
>> $l_foo = 'bar'
>> }
>> else {
>> $l_foo = $foo
>> }
>>
>> Which is irritating.
>>
>> Trevor
>>
>>
> - henrik
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Trevor Vaughan
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(410) 541-6699
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