In the past I suggested operators like ??++ ??+= for this purpose. But the [? $key] is even better, because it makes it explicit which array keys we expect to already exist and which we don't.
$var[$k0][? $k1][? $k2]++; This is great but the second "?" is redundant isn't it? Marco Pivetta <ocram...@gmail.com> schrieb am Do., 12. Sep. 2019, 16:26: > <http://ocramius.github.com/> > > > On Thu, Sep 12, 2019 at 4:02 PM Arvids Godjuks <arvids.godj...@gmail.com> > wrote: > > > > > > > чт, 12 сент. 2019 г. в 15:33, Marco Pivetta <ocram...@gmail.com>: > > > >> Hey Rowan, > >> <http://ocramius.github.com/> > >> > >> > >> On Thu, Sep 12, 2019 at 3:30 PM Rowan Tommins <rowan.coll...@gmail.com> > >> wrote: > >> > >> > For instance, for undefined array keys, what if we had an operator for > >> > "initialise and retrieve", such as $foo[? 'bar']. Then we could > simplify > >> > ugly code like this: > >> > > >> > if ( ! isset($foo[$key1]) { > >> > $foo[$key1] = []; > >> > } > >> > if ( ! isset($foo[$key1][$key2]) { > >> > $foo[$key1][$key2] = 0; > >> > } > >> > $foo[$key1][$key2]++; > >> > > >> > > >> > With something safe but succinct like this: > >> > > >> > $foo[? $key1][? $key2]++; > >> > > >> > >> $foo[$key1][$key2] = ($foo[$key1][$key2] ?? 0) + 1; > >> > >> > >> > > This message contains a healthy dose of sarcasm. > > > > > No sarcasm intended: question is about the verbosity and length of a > *proper* (correct = no warnings/notices/errors, matches type expectations) > checked solution, and I provided a simple one-liner that is both readable > and correct. > > You can make what you want out of this, but there was most certainly no > sarcasm. > > Marco Pivetta > > http://twitter.com/Ocramius > > http://ocramius.github.com/ >
