Hāʻawi ʻia kēia ʻatikala i kahi hoʻohālikelike hoʻohālikelike o nā ʻano loiloi mai ka hana a ke kālaiʻike Kelemania ʻo Georg Wilhelm Friedrich Hegel "Science of Logic" me kā lākou mau analogues a i ʻole ko lākou hele ʻana i ka papahana.

Aia nā hui mai ka Science of Logic i ka italic e pale i ka huikau me nā wehewehe ʻae ʻia o kēia mau huaʻōlelo.

Maʻemaʻe

Inā wehe ʻoe i ka wehewehe kino maemae i loko o ka puke, e ʻike ʻoe i kahi laina hoihoi "me ka ʻole o ka wehewehe ʻana". Akā, no ka poʻe i heluhelu ʻole a ʻike ʻole paha, mai wikiwiki e hoʻopiʻi i ka mea kākau no ka dementia. Maʻemaʻe - he manaʻo kumu kēia ma ka loiloi o Hegel, ʻo ia hoʻi, aia kekahi mea, e ʻoluʻolu, mai huikau ia me ke ʻano o kahi mea, ʻaʻole paha ka mea i ka ʻoiaʻiʻo, akā inā mākou i wehewehe i loko o kā mākou loiloi, aia nō. Inā ʻoe e noʻonoʻo e pili ana, aia maoli nā mea e like me kino maemae ʻAʻole hiki ke hāʻawi i kahi wehewehe, a ʻo kēlā me kēia hoʻāʻo e iho i lalo i ka ʻoiaʻiʻo e nānā wale ʻoe i kona ʻano like a i ʻole antonyms. Maʻemaʻe he manaʻo abstract hiki ke hoʻohana ʻia i nā mea āpau, me ia iho. Ma kekahi mau 'ōlelo e pili ana i nā mea, hiki ke hō'ike i kekahi mea ma ke 'ano he mea, me nā hana ma luna o nā mea, a ma ke kumu e hā'awi mai ai iā mākou i kēlā 'ano o ka abstraction. Eia naʻe, i ka hoʻolālā ʻana i ka analogue pololei kino maemae ʻAʻole. No ka nānā ʻana i ke ola ʻana o kahi mea, pono mākou e nānā no kona nele.

if(obj != null);

He mea kupanaha ka loaʻa ʻole o ia kōpaʻa syntactic i kēia manawa, no ka mea, kaulana loa kēia māka.

ʻAʻohe mea

Pehea ʻoe e koho ai ʻaʻohe mea ʻo ka nele o kekahi mea. A hiki ke kapa ʻia kona analogue NULL. He mea pono e hoʻomaopopo i ka ʻepekema o ka logic ʻaʻohe mea he kino maemae, no ka mea, aia no. He wahi hopu kēia; ʻaʻole hiki iā mākou ke komo i ka NULL ma ke ʻano he mea ma kekahi ʻōlelo, ʻoiai ʻo ia hoʻi.

Hoʻokumu a me nā manawa

E lilo he hoololi mai ʻaʻohe mea в ka noho ʻana a mai noho ana в ʻaʻohe mea. Hāʻawi kēlā iā mākou ʻelua manawa, kapaia ka mua puka ana, a ʻo ka lua e maalo ana. Alahele Ua kapa ʻia ʻo ia ma kahi o ka nalo, no ka mea, ʻaʻole hiki ke nalo ke ʻano lokahi ke ʻole mākou e poina iā ia. Hoihoi no laila hiki iā mākou ke kāhea i ke kaʻina hana. Inā hoʻomaka ʻia kā mākou mea, a laila manawa o ka hanana, a inā hāʻawi ʻia kahi waiwai ʻē aʻe a i ʻole NULL manawa maalo.

obj = new object(); //возникновение
obj = null; //прехождение

Ke ola

I ka pōkole noho ana he mea i maopopo ole ka wehewehe ana, aka ʻoiaʻiʻo. He aha ka manaʻo. ʻO ka laʻana canonical he noho maʻamau. Inā ʻoe e hoʻāʻo e hāʻawi i kahi wehewehe maopopo, e hālāwai ʻoe i nā pilikia he nui. No ka laʻana, ʻōlelo ʻoe: "he ʻāpana kēia i hoʻolālā ʻia no ka noho ʻana," akā ua hana ʻia ka noho no kēia, etc. Akā ʻo ka nele o kahi wehewehe wehewehe ʻaʻole ia e pale iā mākou mai ka hōʻike ʻana i ka lewa a me ka hoʻohana ʻana iā ia i ka wā e hoʻouna ai i ka ʻike e pili ana iā ia, no ka mea aia i loko o ko mākou poʻo. ʻoiaʻiʻo noho. Ua manaʻo paha kekahi ua hana ʻia nā neural network e hoʻokaʻawale i ia mau mea mai ke kahawai ʻikepili. Hiki ke kuhikuhi ʻia kahi neural network ma ke ʻano he hana e wehewehe i kēia ʻoiaʻiʻo, akā, ʻaʻohe ʻano o nā mea e hoʻokomo i nā wehewehe akaka a me ka ʻāhuhi, no laila ʻaʻole hiki ke hoʻohana ʻia ia mau mea ma ka pae hoʻokahi o ka abstraction.

Hoʻololi ke kānāwai o ka hoʻololi ʻana o ka quantitative i nā qualitative

Ua hoʻokumu ʻia kēia kānāwai e Friedrich Engels ma muli o ka wehewehe ʻana i ka manaʻo o Hegel. Eia naʻe, hiki ke ʻike maopopo ʻia ma ka puke mua o ka mokuna ma ana. ʻO kona ʻano nui kēlā mea helu hiki ke hoʻololi i kekahi mea nā kūlana. No ka laʻana, loaʻa iā mākou kahi mea hau; me ka hōʻiliʻili ʻana o ka mahana, e lilo ia i wai wai a hoʻololi i kona nā hiʻohiʻona. No ka hoʻokō ʻana i kēia ʻano i loko o kahi mea, aia kahi ʻano hoʻolālā mokuʻāina. ʻO ka puka ʻana mai o ia ʻano hopena ma muli o ka loaʻa ʻole o ka hoʻolālā ʻana o ia mea waihona no ka mea, hanana mea. Ka Papahana hoʻoholo i nā kūlana e hiki ai ke ʻike ʻia kahi mea, a ma ka algorithm mākou iho e hoʻoholo ai i kahi manawa e pono ai mākou e hoʻomaka i ka mea.

PS: Inā hoihoi kēia ʻike, e nānā au i nā hui ʻē aʻe mai ka Science of Logic.

Source: www.habr.com