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در این ویدیو از پلی لیست آموزش جنگو و نکته‌ها و ترفندهای آن به بررسی مفهوم Django Custom Field پرداختیم. ابتدا نوع داده JSONB Array در پستگرس را با یک مثال شرح دادم و سپس یک کاستوم فیلد نوشتیم که بتوان این نوع داده را ذخیره و بازیابی کنیم. سپس یک Custom lookup هم نوشتیم که بتوان داده ها را فیلتر کرد.
** در این ویدیو اساسا دنبال آموزش خاصی نبودم و دنبال این بودم که ترغیبتون کنم در تله آموزش نیافتید و شروع کنید به خوندن کد خود جنگو که بهترین منبع مستر شدنه :)
در این ویدیو از پلی لیست آموزش جنگو و نکته‌ها و ترفندهای آن به بررسی مفهوم Django Custom Field پرداختیم. ابتدا نوع داده JSONB Array در پستگرس را با یک مثال شرح دادم و سپس یک کاستوم فیلد نوشتیم که بتوان این نوع داده را ذخیره و بازیابی کنیم. سپس یک Custom lookup هم نوشتیم که بتوان داده ها را فیلتر کرد.
** در این ویدیو اساسا دنبال آموزش خاصی نبودم و دنبال این بودم که ترغیبتون کنم در تله آموزش نیافتید و شروع کنید به خوندن کد خود جنگو که بهترین منبع مستر شدنه :)
Pinterest (PINS) closed at $71.75 in the latest trading session, marking a -0.18% move from the prior day. This change lagged the S&P 500's daily gain of 0.1%. Meanwhile, the Dow gained 0.9%, and the Nasdaq, a tech-heavy index, lost 0.59%.
Heading into today, shares of the digital pinboard and shopping tool company had lost 17.41% over the past month, lagging the Computer and Technology sector's loss of 5.38% and the S&P 500's gain of 0.71% in that time.
Investors will be hoping for strength from PINS as it approaches its next earnings release. The company is expected to report EPS of $0.07, up 170% from the prior-year quarter. Our most recent consensus estimate is calling for quarterly revenue of $467.87 million, up 72.05% from the year-ago period.
How Does Bitcoin Work?
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
