he is such a great teacher and I actually am learning JS from his channel . and even though I know python for years still enjoying to see his way of teaching. thanx
I feel like seeing this in JavaScript before Python helps folks understand it even better. Sure, lambda arg: are a little different than ()=> but given Python isn’t functional in nature, I noticed many folks find this to be confusing. You did an awesome job explaining it!
once you see its actual use cases (call backs ,....) you will find that the lambda is a very effective tool you can't do without , maybe that's why pep-8 recommends that lambda should not be assigned ,cause its own use cases are very special , like in GUI programming if a widget need to pass one or two parameters to a function , you can not use a function for that unless you wrap your function inside an otter function that calls inner function to have a return value , but a simple lambda expression will save the day and you don't need to even define a function even if your command is a function like print( argument) you can't use () in your command= in your widget and you had to wrap the print inside a function otherwise print returns None but by using lambda you simply can use Button(......, command=lambda:print('string')) or command = lambda event:print(event). otherwise you got to use a higher order function (nested wrapper / inner) function
Hey Dave, i am facing very slow compilation time in nextjs . A single change in file takes upto 60 seconds to appear and takes upto 2.5 gbs of ram. Also i am not using additional packages. I have noticed 1000s of devs facing same issue. How do you encounter this? It is very frustrating. It should have to be fast like vite. 😭😭😭 I really started hating it now but have to use it for SEO 😭😭😭😭
According to PEP-8 anonymous functions better not assign to a variable their use is more like call backs like arr.sort(key = lambda data:data[0]) and other stuff like that. but visual studio doesn't apply the pep-8 unless you install an extension. I remember the extension was very annoying , but now see it as a tool to learn pep 8 standards in the action to write better code.
6:00 Would be helpful if your commented lambda rewrites inluded the var name as you had originally entered. Without the var name, the commented lambdas are not equivalent to the defs.
once you see its actual use cases (call backs ,....) you will find that the lambda is a very effective tool you can't do without , maybe that's why pep-8 recommends that lambda should not be assigned ,cause its own use cases are very special , like in GUI programming if a widget need to pass one or two parameters to a function , you can not use a function for that unless you wrap your function inside an otter function that calls inner function to have a return value , but a simple lambda expression will save the day and you don't need to even define a function even if your command is a function like print( argument) you can't use () in your command= in your widget and you had to wrap the print inside a function otherwise print returns None but by using lambda you simply can use Button(......, command=lambda:print('string')) or command = lambda event:print(event). otherwise you got to use a higher order function (nested wrapper / inner) function
Hey dave ! Just curious to know how coding teachers on RU-vid like you get there knowledge from. Where they get to know so details of those coding languages?
1:34 My vscode doesn't do this conversion, so i'm guessing you have a formatter extension installed, such as "black". So that's not a native vscode behavior. 15:01 My vscode doesn't move imports to the top. Again, i'm guessing you have a formatter extension.
