Один из самых удобных способов записать данные это использование готовых форматов, такие как JSON или YAML.
Из плюсов такого подхода стоит отметить вот что:
🔸 готовый, повсеместно используемый и поддерживаемый формат
🔸 простой и понятный файл, удобочитаемый для человека
🔸 можно легко редактировать в любом текстовом редакторе без специальных программ и библиотек
Но есть и минусы
🔹 затраты времени при записи файла (кодирование данных в нужный формат строки)
🔹 затраты времени при чтении файла (декодирование данных в Python объекты)
🔹 размер файла увеличивается из-за разметки данных (скобки, запятые, переносы, отступы...)
🔹 перед записью все данные должны быть помещены в память в полном объёме (не всегда)
🔹 при чтении необходимо считать весь файл в память и только потом декодировать данные
Если нужно писать немного данных в несколько файлов, то затраты по времени не ощутимы. Обычно это файлы конфига или какие-либо метаданные. Это отличный вариант под такие задачи.
Есть и другой поход к записи файлов - это бинарные файлы. Используется, когда данных достаточно много и никто их не собирается читать глазками😳.
🔸 очень быстрая запись
🔸 чтение значительно быстрей чем JSON, YAML итд
🔸 размер файла значительно меньше, так как нет разметки
🔸 можно записывать данные по мере поступления не загружая всё в память
🔸 можно извлечь любую часть данных независимо
Из минусов
🔹 нужно определить свой формат записи данных (если не используете готовую спецификацию определённого формата)
🔹 не получится открыть файл и визуально понять что там записано, а для чтения файла потребуется знать его спецификацию.
🔹 не так-то просто создать такой файл без специальной библиотеки
В таком виде удобно записывать большой массив любых однородных данных. Например, мониторинг валютной биржи или кэшированная анимация 3D геометрии.
(Это не означает что нельзя записать данные разного типа, просто это будет не так удобно)
Представьте себе JPG-картинку. По сути это немного мета-информации и большой массив пикселей. Тоже самое со звуком или видео файлом. Поэтому, если вы попробуете открыть картинку в текстовом редакторе вы увидите что-то вроде такого
f15d cd29 a564 4578 ...
09e2 9bc4 a696 1253 ...
84e9 4de1 3b23 c24a ...
2534 5161 28e0 709d ...
...
Это и есть записанные байтики. И для их чтения требуется определённый софт который знает что с ними делать. Под каждый тип файла.
К чему это я? Читайте в следующем посте...
#tricks#basic
#vocabulary
#collocations
#effect
@fluencyinenglish
@ieltsstrategies
🤞Sharing is caring🤞
❇️Effect
🔹side effect an unwanted and unplanned effect that something has – used especially (about drugs and medical treatment)
Common side effects of the drug may include headaches and muscle pains.
🔹after effects
bad effects that continue for a long time after the thing that caused them
A traumatic experience can have severe psychological after-effects war.
🔹repercussions /ˌriːpəˈkʌʃəns $ -pər-/ the effects that happen later as a result of an event or decision, especially a range of effects that continue for a long time
The scandal could have serious repercussions for her career.The judge’s decision is likely to have important repercussions for future cases of this kind.
🔹a knock-on effect used when something has an effect on something, which then has an effect on something else
Higher oil prices have a knock-on effect on other fuels
❇️VERBS
have an effect on something/somebody
Eating junk food will eventually have an effect on your health.
🔹have the effect of doing somethingThe news had the effect of making everyone feel better.
🔹produce an effect formalIf we combine these sounds, they produce an effect that is almost jazzy.
🔹feel an effect (=notice it)Small companies will feel the effect of the recession first.
🔹lessen/reduce an effect (=make an effect smaller or less severe)The government must take action to reduce the effects of pollution.
🔹cushion the effect of something(=make it less bad)Lower mortgage rates will cushion the effect of rising house prices.
🔹an effect lasts (=continues)The effect of the drug lasts about six hours.
🔹an effect wears off (=gradually stops)The effect of the anaesthetic was beginning to wear off.
❇️ADJECTIVES
🔹big/majorThe teachers’ strike had a big effect on many schools.
🔹significant/substantial/marked (=quite big)Global warming could have a significant effect on agriculture in many parts of the world.
🔹profound/powerful (=very big, in a way that changes someone or something significantly )My father’s death had a profound effect on me.
🔹dramatic (=very big and sudden)Taking the new drug had a dramatic effect on his health.
🔹negligible/minimal formal (=very small)The advertising campaign had a negligible effect on demand.
🔹immediate (=quick and sudden)The announcement had an immediate effect on stock prices.
good Inflation can sometimes have some good effects on the economy.
@fluencyinenglish
@ieltsstrategies
🔹positive/beneficial (=good, or helping someone or something in some way)The incident had a very positive effect on his career.badWorking too hard was beginning to have a bad effect on my health.
🔹negative/detrimental (=bad or harmful)the negative effects of low rainfall
@fluencyinenglish
@ieltsstrategies
🔹harmful/damaging (=causing harm or damage to something or someone)the harmful effects of drinking too much alcoholSome of the effects can be quite damaging.
🔹visible/noticeable (=an effect that you can clearly see)He drank five beers, but they did not seem to have any visible effect on him.
@fluencyinenglish
@ieltsstrategies
🔹the adverse effects formal (=the bad effects)No one told them about the adverse effects of smoking marijuana.
🔹the long-term/short-term effect(=having an effect for a long or short time)Many boxers suffer with the long-term effects of punches to the head.
@fluencyinenglish
@ieltsstrategies
🔹a knock-on effect (=an effect that is caused by something that has happened before)The strike could have a knock-on effect at other airports.
@fluencyinenglish
@ieltsstrategies
🔹a cumulative effect (=the effect of many things happening one after the other)The cumulative effect of these policies will be to push up inflation.
🔹the desired effect (=the effect you want)
@fluencyinenglish
@ieltsstrategies
🔹the full effect (=the whole effect)
🔹a calming/soothing effect (=one that makes you feel less angry, excited, or nervous)
@fluencyinenglish
@ieltsstrategies
#vocabulary
#collocations
#effect
@fluencyinenglish
@ieltsstrategies
🤞Sharing is caring🤞
❇️Effect
🔹side effect an unwanted and unplanned effect that something has – used especially (about drugs and medical treatment)
Common side effects of the drug may include headaches and muscle pains.
🔹after effects
bad effects that continue for a long time after the thing that caused them
A traumatic experience can have severe psychological after-effects war.
🔹repercussions /ˌriːpəˈkʌʃəns $ -pər-/ the effects that happen later as a result of an event or decision, especially a range of effects that continue for a long time
The scandal could have serious repercussions for her career.The judge’s decision is likely to have important repercussions for future cases of this kind.
🔹a knock-on effect used when something has an effect on something, which then has an effect on something else
Higher oil prices have a knock-on effect on other fuels
❇️VERBS
have an effect on something/somebody
Eating junk food will eventually have an effect on your health.
🔹have the effect of doing somethingThe news had the effect of making everyone feel better.
🔹produce an effect formalIf we combine these sounds, they produce an effect that is almost jazzy.
🔹feel an effect (=notice it)Small companies will feel the effect of the recession first.
🔹lessen/reduce an effect (=make an effect smaller or less severe)The government must take action to reduce the effects of pollution.
🔹cushion the effect of something(=make it less bad)Lower mortgage rates will cushion the effect of rising house prices.
🔹an effect lasts (=continues)The effect of the drug lasts about six hours.
🔹an effect wears off (=gradually stops)The effect of the anaesthetic was beginning to wear off.
❇️ADJECTIVES
🔹big/majorThe teachers’ strike had a big effect on many schools.
🔹significant/substantial/marked (=quite big)Global warming could have a significant effect on agriculture in many parts of the world.
🔹profound/powerful (=very big, in a way that changes someone or something significantly )My father’s death had a profound effect on me.
🔹dramatic (=very big and sudden)Taking the new drug had a dramatic effect on his health.
🔹negligible/minimal formal (=very small)The advertising campaign had a negligible effect on demand.
🔹immediate (=quick and sudden)The announcement had an immediate effect on stock prices.
good Inflation can sometimes have some good effects on the economy.
@fluencyinenglish
@ieltsstrategies
🔹positive/beneficial (=good, or helping someone or something in some way)The incident had a very positive effect on his career.badWorking too hard was beginning to have a bad effect on my health.
🔹negative/detrimental (=bad or harmful)the negative effects of low rainfall
@fluencyinenglish
@ieltsstrategies
🔹harmful/damaging (=causing harm or damage to something or someone)the harmful effects of drinking too much alcoholSome of the effects can be quite damaging.
🔹visible/noticeable (=an effect that you can clearly see)He drank five beers, but they did not seem to have any visible effect on him.
@fluencyinenglish
@ieltsstrategies
🔹the adverse effects formal (=the bad effects)No one told them about the adverse effects of smoking marijuana.
🔹the long-term/short-term effect(=having an effect for a long or short time)Many boxers suffer with the long-term effects of punches to the head.
@fluencyinenglish
@ieltsstrategies
🔹a knock-on effect (=an effect that is caused by something that has happened before)The strike could have a knock-on effect at other airports.
@fluencyinenglish
@ieltsstrategies
🔹a cumulative effect (=the effect of many things happening one after the other)The cumulative effect of these policies will be to push up inflation.
🔹the desired effect (=the effect you want)
@fluencyinenglish
@ieltsstrategies
🔹the full effect (=the whole effect)
🔹a calming/soothing effect (=one that makes you feel less angry, excited, or nervous)
@fluencyinenglish
@ieltsstrategies
#collocations
#effect
#vocabulary
@ieltsstrategies
@fluencyinenglish
لغت effect هم در رایتینگ و سپیکینگ معمولا کاربرد زیادی در آزمون آیلتس پیدا می کند. زیرا، در برخی از سوالات از ما خواسته میشه که تاثیرات یک سری عوامل را چه از لحاظ منفی وچه مثبت توضیح دهیم.
در ادامه کالوکیشن های مهم که همراه با effect می آیند را برای شما آورده ایم.
@ieltsstrategies
@fluencyinenglish
✅Crippling/destructive/damaging effect
تاثیر مخرب
@ieltsstrategies
@fluencyinenglish
✅ culminative effect
تاثیر کلی
✅ To ease the effect of sth
عواقب/اثرات .... را کاهش دادن.
@ieltsstrategies
@fluencyinenglish
✅Ameliorate/cushion/lessen/minimize/reduce the effect of sth
اثر/تاثیر چیزی را کاستن
@ieltsstrategies
@fluencyinenglish
✅marginal/negligible/subtle effect
تاثیر ناچیز
@ieltsstrategies
@fluencyinenglish
✅lasting effects
تاثیرات ماندگار
@ieltsstrategies
@fluencyinenglish
✅knock-on effect
تاثیر نا مطلوب، پی آمدهای ناگوار
@ieltsstrategies
@fluencyinenglish
✅ yo-yo effect
نوسان، ترقی و تنزل
✅ undesirable effect
اثر نامطلوب
@ieltsstrategies
@fluencyinenglish
✅ permanent/lasting/ long term effect
تاثیر دایمی
@ieltsstrategies
@fluencyinenglish